Issue #1274 - Part 1: Adopt the cairo version as our own.

- Move header licensing from tri-license to MPL 2.0. MPL-compatible
  other licensing has been retained where originally present.
- Remove individual superseded licensing terms.
- Remove patches, outdated readmes & incomplete patch summaries.
- Remove incomplete cairo release notes (only went up to 1.6.4 anyway).
- Rewrite COPYING to indicate the current state of the library in tree.

1 files changed, 0 insertions, 90 deletions

diff --git a/gfx/cairo/text-path-filling-threshold.patch b/gfx/cairo/text-path-filling-threshold.patch
deleted file mode 100644
index 69efce093..000000000
--- a/gfx/cairo/text-path-filling-threshold.patch
+++ /dev/null
@@ -1,90 +0,0 @@
-diff --git a/gfx/cairo/cairo/src/cairo-gstate.c b/gfx/cairo/cairo/src/cairo-gstate.c
---- a/gfx/cairo/cairo/src/cairo-gstate.c
-+++ b/gfx/cairo/cairo/src/cairo-gstate.c
-@@ -1673,26 +1673,31 @@ _cairo_gstate_show_text_glyphs (cairo_gs
- 
-     source_pattern = &source_pattern_stack.base;
-     status = _cairo_gstate_copy_transformed_source (gstate, &source_pattern);
-     if (unlikely (status))
- 	goto CLEANUP_GLYPHS;
- 
-     /* For really huge font sizes, we can just do path;fill instead of
-      * show_glyphs, as show_glyphs would put excess pressure on the cache,
--     * and moreover, not all components below us correctly handle huge font
--     * sizes.  I wanted to set the limit at 256.  But alas, seems like cairo's
-+     * not all components below us correctly handle huge font sizes, and
-+     * path filling can be cheaper since parts of glyphs are likely to be
-+     * clipped out.  256 seems like a good limit.  But alas, seems like cairo's
-      * rasterizer is something like ten times slower than freetype's for huge
--     * sizes.  So, no win just yet.  For now, do it for insanely-huge sizes,
--     * just to make sure we don't make anyone unhappy.  When we get a really
--     * fast rasterizer in cairo, we may want to readjust this.
-+     * sizes.  So, no win just yet when we're using cairo's rasterizer.
-+     * For now, if we're using cairo's rasterizer, use path filling only
-+     * for insanely-huge sizes, just to make sure we don't make anyone
-+     * unhappy.  When we get a really fast rasterizer in cairo, we may
-+     * want to readjust this.  The threshold calculation is
-+     * encapsulated in _cairo_surface_get_text_path_fill_threshold.
-      *
-      * Needless to say, do this only if show_text_glyphs is not available. */
-     if (cairo_surface_has_show_text_glyphs (gstate->target) ||
--	_cairo_scaled_font_get_max_scale (gstate->scaled_font) <= 10240) {
-+	_cairo_scaled_font_get_max_scale (gstate->scaled_font) <=
-+	_cairo_surface_get_text_path_fill_threshold (gstate->target)) {
- 	status = _cairo_surface_show_text_glyphs (gstate->target,
- 						  gstate->op,
- 						  source_pattern,
- 						  utf8, utf8_len,
- 						  transformed_glyphs, num_glyphs,
- 						  transformed_clusters, num_clusters,
- 						  cluster_flags,
- 						  gstate->scaled_font, NULL);
-diff --git a/gfx/cairo/cairo/src/cairo-surface.c b/gfx/cairo/cairo/src/cairo-surface.c
---- a/gfx/cairo/cairo/src/cairo-surface.c
-+++ b/gfx/cairo/cairo/src/cairo-surface.c
-@@ -1120,16 +1120,22 @@ cairo_surface_get_fallback_resolution (c
- 				       double		*y_pixels_per_inch)
- {
-     if (x_pixels_per_inch)
- 	*x_pixels_per_inch = surface->x_fallback_resolution;
-     if (y_pixels_per_inch)
- 	*y_pixels_per_inch = surface->y_fallback_resolution;
- }
- 
-+int
-+_cairo_surface_get_text_path_fill_threshold (const cairo_surface_t *surface)
-+{
-+    return surface->backend->fill == NULL ? 10240 : 256;
-+}
-+
- cairo_bool_t
- _cairo_surface_has_device_transform (cairo_surface_t *surface)
- {
-     return ! _cairo_matrix_is_identity (&surface->device_transform);
- }
- 
- /**
-  * _cairo_surface_acquire_source_image:
-diff --git a/gfx/cairo/cairo/src/cairoint.h b/gfx/cairo/cairo/src/cairoint.h
---- a/gfx/cairo/cairo/src/cairoint.h
-+++ b/gfx/cairo/cairo/src/cairoint.h
-@@ -2065,16 +2065,19 @@ _cairo_surface_composite_shape_fixup_unb
- 						int			    dst_x,
- 						int			    dst_y,
- 						unsigned int		    width,
- 						unsigned int		    height);
- 
- cairo_private cairo_bool_t
- _cairo_surface_is_opaque (const cairo_surface_t *surface);
- 
-+cairo_private int
-+_cairo_surface_get_text_path_fill_threshold (const cairo_surface_t *surface);
-+
- cairo_private void
- _cairo_surface_set_device_scale (cairo_surface_t *surface,
- 				 double		  sx,
- 				 double		  sy);
- 
- cairo_private cairo_bool_t
- _cairo_surface_has_device_transform (cairo_surface_t *surface);
-