Changes made to pristine libpng source by mozilla.org developers. 2016/10/20 -- Synced with libpng-1.6.26 (bug #1311776). 2016/09/01 -- Synced with libpng-1.6.25 (bug #1299590). 2016/08/11 -- Enabled SSE2 support (bug #1276127). 2016/08/06 -- Synced with libpng-1.6.24 (bug #1291986). 2016/06/09 -- Synced with libpng-1.6.23 (bug #1275901). 2016/01/16 -- Synced with libpng-1.6.21 (bug #1230757). 2015/11/12 -- Synced with libpng-1.6.19 (bug #1224244). 2015/07/30 -- Synced with libpng-1.6.18 (bug #1186977). 2015/03/27 -- Synced with libpng-1.6.17 (bug #1147909). 2014/12/22 -- Synced with libpng-1.6.16 (bug #1114360). Added arm.patch file. 2014/11/20 -- Synced with libpng-1.6.15 (bug #1102523). 2014/10/23 -- Synced with libpng-1.6.14 (bug #1087841). 2014/08/21 -- Synced with libpng-1.6.13 (bug #1021713). Renamed mozpngconf.h to pnglibconf.h. Revised system arm/filter_neon.S to include the lines #define PNG_READ_SUPPORTED and #define MOZ_PNG_HAVE_ARM_NEON because the moz.build system doesn't yet pass -DDefined macros to the assembler. 2014/03/21 -- Synced with libpng-1.6.10 (bug #980488) and disabled PNG_WARNINGS and PNG_ERROR_TEXT in non-debug builds. Limit image dimensions to 32767 (bug #251381, #591822, and #967656). 2014/03/04 -- Enabled PNG_WARNINGS and other stuff in mozpngconf.h as part of enabling Freetype2 with PNG (bug #969814). 2014/03/03 -- Fixed hang with empty IDAT (bug #974825). This will be fixed in libpng-1.6.10. 2014/02/18 -- Exposed png_error(), etc. redefinitions to applications (moved them from pngpriv.h to png.h). This will be fixed in libpng-1.6.10. 2014/02/18 -- Disabled PNG_FIXED_POINT_SUPPORTED in mozpngconf.h (we don't need both FIXED and FLOATING_POINT support). 2014/02/15 -- Synced with libpng-1.6.9 (bug #952505). 2014/02/11 -- Fixed crash with empty PLTE, CVE-2013-6954 (bug #945912). This will be fixed in libpng-1.6.9. 2013/12/11 -- Enable ARM support (bug #832390). 2013/11/17 -- Synced with libpng-1.6.7 (bug #938740). 2013/09/21 -- Synced with libpng-1.6.6 (bug #841734). 2013/07/17 -- Synced with libpng-1.5.17 (bug #886499). 2013/06/06 -- Synced with libpng-1.5.16 (bug #873001). 2013/04/11 -- Synced with libpng-1.5.15 (bug #858578). 2013/01/24 -- Synced with libpng-1.5.14 (bug #832487). 2013/01/23 -- Disabled TEXT support in mozpngconf.h (bug #833594). 2012/10/02 -- Synced with libpng-1.5.13 (bug #775662). 2012/07/16 -- Add an "APNG-aware app" flag (bug #759067). 2012/07/04 -- Synced with libpng-1.5.11 (bug #771394). 2012/04/13 -- Synced with libpng-1.5.10 (bug #745178). 2012/02/19 -- Synced with libpng-1.5.9 (bug #648690). 2011/07/20 -- Synced with libpng-1.4.8 (bug #669863). 2011/04/08 -- Synced with libpng-1.4.7 (bug #624133). 2010/06/30 -- Synced with libpng-1.4.3 (bug #564792). 2010/02/26 -- Synced with libpng-1.4.1 (bug #544747). 2010/01/04 -- Synced with libpng-1.4.0 (bug #532645). 2009/09/10 -- Synced with libpng-1.2.40 (bug #492200 and #504805). Moved location of acTL chunk to just after IHDR in output PNG file. 2009/06/01 -- Eliminated incorrect test and rejection of APNG blend_op in opaque images (bug #441971 and #455140). 2009/05/17 -- Always clear prev_row for each APNG frame (bug #463465). 2009/02/19 -- Synced with libpng-1.2.35 (bug #478901). 2008/08/21 -- Synced with libpng-1.2.31 (bug #418900). 2008/03/29 -- Initialize prev_row for each APNG frame, only when the frame size increases (bug #420416). 2008/01/18 -- Synced with libpng-1.2.24 (bug #408429). 2007/11/13 -- Synced with libpng-1.2.23; Removed pnggccrd.c and pngvcrd.c; Reduced footprint by removing error and warning text in non-debug builds via settings in mozpngconf.h (bug #403239). 2007/11/06 -- Synced with libpng-1.2.22 (removes MMX support) (bug #386585). 2007/07/27 -- Enabled cHRM and iCCP chunks for color management (bug #16769). 2007/05/05 -- Zeroed png_ptr->num_trans on CRC error (bug #374810). 2007/04/19 -- Synced with libpng-1.2.16 tree (bug #373249). 2007/03/20 -- Added support for APNG (bug #257197). 2006/06/27 -- Synced with libpng-1.2.12 tree (bug #334110). 2004/10/07 -- Synced with libpng-1.2.7 tree (bug #261922). 2004/10/07 -- Added mozpngconf.h (bug #208607).