Fix tiny_psnr so it compares all bytes (it did skip the last block).

Fix tiny_psnr so it compares all bytes (it did skip the last block).
Also display both file sizes and slightly change the output formatting.
[not split in 3 patches to avoid the huge checksum files from being changed
 and having to be reviewed 3 times, if people want it split i can revert and
 split it]

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@14374 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b