tiny_psnr: print max absolute difference between files
Regression test reference updates are due to the extra outputfrom tiny_psnr.
Patch by Vitor Sessak
Originally committed as revision 24132 to svn://svn.ffmpeg.org/ffmpeg/trunk
Place regression test output files in subdirs per family
Originally committed as revision 22155 to svn://svn.ffmpeg.org/ffmpeg/trunk
regtest: split reference files allowing tests to run individually
With this change, the output is checked immediately after each testhas run. This means commands like "make regtest-mpeg2" can now beused to run a single test and get meaningful results....