The old names were not av_ prefixed, and they were causing linking
failure on many platforms. The new names are also more descriptive.
Patch by Stefano Sabatini.
Originally committed as revision 24101 to svn://svn.ffmpeg.org/ffmpeg/trunk
pixdesc.c, which are now not anymore marked as static inline.
Fix the inclusion of the private header intreadwrite.h in the public
header pixdesc.h.
Originally committed as revision 21854 to svn://svn.ffmpeg.org/ffmpeg/trunk
This way pixdescs can be used without requiring a dependency on
libavcodec.
Originally committed as revision 20389 to svn://svn.ffmpeg.org/ffmpeg/trunk