Replace (old) FSF postal address with URL in header files

Wording copied from https://www.gnu.org/licenses/gpl-howto.en.html

Fixes #25, fixes #71

28 files changed, 28 insertions, 56 deletions

diff --git a/src/audio/audio_codecs.cpp b/src/audio/audio_codecs.cpp
index 849638d..94a7380 100644
--- a/src/audio/audio_codecs.cpp
+++ b/src/audio/audio_codecs.cpp
@@ -12,8 +12,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <cstdlib>
diff --git a/src/audio/audio_codecs.h b/src/audio/audio_codecs.h
index 30011bb..abc1857 100644
--- a/src/audio/audio_codecs.h
+++ b/src/audio/audio_codecs.h
@@ -12,8 +12,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #ifndef _AUDIO_CODECS_H
diff --git a/src/audio/audio_decoder.cpp b/src/audio/audio_decoder.cpp
index 0f32214..65935dd 100644
--- a/src/audio/audio_decoder.cpp
+++ b/src/audio/audio_decoder.cpp
@@ -12,8 +12,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <cassert>
diff --git a/src/audio/audio_decoder.h b/src/audio/audio_decoder.h
index 25d895c..98d1adb 100644
--- a/src/audio/audio_decoder.h
+++ b/src/audio/audio_decoder.h
@@ -12,8 +12,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 // Audio decoders
diff --git a/src/audio/audio_device.cpp b/src/audio/audio_device.cpp
index 3000a99..593c0d8 100644
--- a/src/audio/audio_device.cpp
+++ b/src/audio/audio_device.cpp
@@ -12,8 +12,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include "audio_device.h"
diff --git a/src/audio/audio_device.h b/src/audio/audio_device.h
index 27503f8..5adc1bb 100644
--- a/src/audio/audio_device.h
+++ b/src/audio/audio_device.h
@@ -12,8 +12,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #ifndef _AUDIO_DEVICE_H
diff --git a/src/audio/audio_encoder.cpp b/src/audio/audio_encoder.cpp
index e77ab14..d6ff356 100644
--- a/src/audio/audio_encoder.cpp
+++ b/src/audio/audio_encoder.cpp
@@ -12,8 +12,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <cassert>
diff --git a/src/audio/audio_encoder.h b/src/audio/audio_encoder.h
index 907283f..ceaac97 100644
--- a/src/audio/audio_encoder.h
+++ b/src/audio/audio_encoder.h
@@ -12,8 +12,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 // Audio encoders
diff --git a/src/audio/audio_rx.cpp b/src/audio/audio_rx.cpp
index e605fcf..dbc7517 100644
--- a/src/audio/audio_rx.cpp
+++ b/src/audio/audio_rx.cpp
@@ -12,8 +12,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <iostream>
diff --git a/src/audio/audio_rx.h b/src/audio/audio_rx.h
index 88d8884..5bbc5c6 100644
--- a/src/audio/audio_rx.h
+++ b/src/audio/audio_rx.h
@@ -12,8 +12,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #ifndef _AUDIO_RX_H
diff --git a/src/audio/audio_session.cpp b/src/audio/audio_session.cpp
index 539e2b1..8e652fe 100644
--- a/src/audio/audio_session.cpp
+++ b/src/audio/audio_session.cpp
@@ -12,8 +12,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 #include "twinkle_config.h"
 
diff --git a/src/audio/audio_session.h b/src/audio/audio_session.h
index 422dbcd..1e01ce0 100644
--- a/src/audio/audio_session.h
+++ b/src/audio/audio_session.h
@@ -12,8 +12,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #ifndef _AUDIO_SESSION_H
diff --git a/src/audio/audio_tx.cpp b/src/audio/audio_tx.cpp
index effea29..1378bfa 100644
--- a/src/audio/audio_tx.cpp
+++ b/src/audio/audio_tx.cpp
@@ -12,8 +12,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <assert.h>
diff --git a/src/audio/audio_tx.h b/src/audio/audio_tx.h
index 20daebc..7fe1580 100644
--- a/src/audio/audio_tx.h
+++ b/src/audio/audio_tx.h
@@ -12,8 +12,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #ifndef _AUDIO_TX_H
diff --git a/src/audio/dtmf_player.cpp b/src/audio/dtmf_player.cpp
index 54c2580..8e2ed29 100644
--- a/src/audio/dtmf_player.cpp
+++ b/src/audio/dtmf_player.cpp
@@ -12,8 +12,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <cassert>
diff --git a/src/audio/dtmf_player.h b/src/audio/dtmf_player.h
index de10bb1..5f41939 100644
--- a/src/audio/dtmf_player.h
+++ b/src/audio/dtmf_player.h
@@ -12,8 +12,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 // Classes to generate RTP payloads for DTMF tones.
diff --git a/src/audio/freq_gen.cpp b/src/audio/freq_gen.cpp
index 0ba669e..e97c866 100644
--- a/src/audio/freq_gen.cpp
+++ b/src/audio/freq_gen.cpp
@@ -12,8 +12,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include "freq_gen.h"
diff --git a/src/audio/freq_gen.h b/src/audio/freq_gen.h
index 40818fa..5a0218e 100644
--- a/src/audio/freq_gen.h
+++ b/src/audio/freq_gen.h
@@ -12,8 +12,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 // Frequency generator
diff --git a/src/audio/media_buffer.cpp b/src/audio/media_buffer.cpp
index cc62605..ef7bb04 100644
--- a/src/audio/media_buffer.cpp
+++ b/src/audio/media_buffer.cpp
@@ -12,8 +12,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include "media_buffer.h"
diff --git a/src/audio/media_buffer.h b/src/audio/media_buffer.h
index 80658f6..628fc73 100644
--- a/src/audio/media_buffer.h
+++ b/src/audio/media_buffer.h
@@ -12,8 +12,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #ifndef _MEDIA_BUFFER_H
diff --git a/src/audio/rtp_telephone_event.cpp b/src/audio/rtp_telephone_event.cpp
index b4f4c00..d9fd282 100644
--- a/src/audio/rtp_telephone_event.cpp
+++ b/src/audio/rtp_telephone_event.cpp
@@ -12,8 +12,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include "cassert"
diff --git a/src/audio/rtp_telephone_event.h b/src/audio/rtp_telephone_event.h
index 5f8d005..d109983 100644
--- a/src/audio/rtp_telephone_event.h
+++ b/src/audio/rtp_telephone_event.h
@@ -12,8 +12,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 // RFC 2833
diff --git a/src/audio/tone_gen.cpp b/src/audio/tone_gen.cpp
index 0f68c94..806cb1b 100644
--- a/src/audio/tone_gen.cpp
+++ b/src/audio/tone_gen.cpp
@@ -12,8 +12,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <unistd.h>
diff --git a/src/audio/tone_gen.h b/src/audio/tone_gen.h
index a789734..31de026 100644
--- a/src/audio/tone_gen.h
+++ b/src/audio/tone_gen.h
@@ -12,8 +12,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #ifndef _TONE_GEN_H
diff --git a/src/audio/twinkle_rtp_session.cpp b/src/audio/twinkle_rtp_session.cpp
index 8d2da01..3144a5f 100644
--- a/src/audio/twinkle_rtp_session.cpp
+++ b/src/audio/twinkle_rtp_session.cpp
@@ -13,8 +13,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #include <unistd.h>
diff --git a/src/audio/twinkle_rtp_session.h b/src/audio/twinkle_rtp_session.h
index 2bb9f62..bba5b7f 100644
--- a/src/audio/twinkle_rtp_session.h
+++ b/src/audio/twinkle_rtp_session.h
@@ -12,8 +12,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 #ifndef TWINKLE_RTP_SESSION_H
diff --git a/src/audio/twinkle_zrtp_ui.cpp b/src/audio/twinkle_zrtp_ui.cpp
index d0709ca..7eb6854 100644
--- a/src/audio/twinkle_zrtp_ui.cpp
+++ b/src/audio/twinkle_zrtp_ui.cpp
@@ -12,8 +12,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 // Author: Werner Dittmann <Werner.Dittmann@t-online.de>, (C) 2006
diff --git a/src/audio/twinkle_zrtp_ui.h b/src/audio/twinkle_zrtp_ui.h
index 66861dc..ea36245 100644
--- a/src/audio/twinkle_zrtp_ui.h
+++ b/src/audio/twinkle_zrtp_ui.h
@@ -12,8 +12,7 @@
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 // Author: Werner Dittmann <Werner.Dittmann@t-online.de>, (C) 2006