Add SSE3 support.
Patch by Zuxy Meng < zuxy POIS meng AH gmail POIS com >
Original thread:
04/26/06 13:13:
[Ffmpeg-devel] [PATCH] Bug fix,	SSE3 support in i386/cputest.c and dsputil.h


git-svn-id: file:///var/local/repositories/ffmpeg/trunk@5326 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b