Bug 12103

New release for vorbis-tools.
Notable changes:
* Cleanup of the build system
* Updated po/ to reflect new code positions
* ogg123, ogginfo: Added support to decode METADATA_BLOCK_PICTURE
* ogginfo: Added support for decoding Skeleton
* Updated documentation including manpages
 * Fixed invalid handling of input data (#2007)
 * oggenc, oggdec: Fixed memory leak
 * oggenc, ogg123: Always link libm
 * oggenc: Fixed RIFF/WAVE 6.1 channel mapping (#1749)
 * oggenc: Fixed --ignorelength (#1803)
 * oggenc: Fixed crash on raw input (#2009)
 * oggenc: Reject files with invalid sample rates (#2078)
 * oggenc: Fixed crash when encoding from stdin
 * oggenc: Fixed floating point error (Debian bug: #328266, #634855)
 * oggenc: Fixed large alloca on bad AIFF input (CVE-2015-6749)
 * oggenc: Validate count of channels in the header (CVE-2014-9638, CVE-2014-9639)
 * oggdec: Fixed write of version to not corrupt data (Debian bug: #595104)
 * oggdec: Fixed crash on stream errors (#2148, Debian bug: #772978)
 * oggdec: Use translations (#2149, Debian bug: #772976)
 * oggdec: Fixed output to stdout (Do not write "-.wav" files) (#1678, Debian bug: 263762)
 * ogg123: Fixed format string error
 * ogg123: Fixed playback of stereo speex tracks with no intensity signal (#1676)
 * ogg123: Fixed locking/synchronization error
 * ogg123: Fixed freeze on interrupt at EOF (#1956, Debian bug: #307325)
 * ogg123: Fixed wrong display of status lines (#1677, Debian bug: #239073)
 * ogg123: Fixed Speex playback, correctly initialize channel matrix (Debian bug: #772766)
 * ogg123: Added support for Opus files
 * ogginfo: Corrected reported duration for Theora streams
 * ogginfo: Added support for Opus, FLAC, and speex
 * vcut: Corrected code to match language specification (#1701)
 * vcut: Corrected memory access (#2264, Debian bug: #818037)
 * vorbiscomment: Added -d/--rm to allow removal of tags
 * vorbiscomment: Fixed handling of short files