Add more tests to eval, help detecting some of the more apparenterrors, far from being a complete test system.
Originally committed as revision 23635 to svn://svn.ffmpeg.org/ffmpeg/trunk
Make av_parse_expr() fail if there are trailing chars at the end ofthe provided expression.
Allow detection of mistyped expressions.
Originally committed as revision 23629 to svn://svn.ffmpeg.org/ffmpeg/trunk
Improve av_parse_eval() error reporting.
Originally committed as revision 23627 to svn://svn.ffmpeg.org/ffmpeg/trunk
Move eval.c and eval.h from libavcodec to libavutil, and make the evalAPI public.
Originally committed as revision 23485 to svn://svn.ffmpeg.org/ffmpeg/trunk