Update x264 asm code to latest to add support for 64-bit Windows.Use the new x86inc features to support 64-bit Windows on all non-x264 nasmassembly code as well.Patch by John Adcock, dscaler.johnad AT googlemail DOT com.Win64 changes originally by Anton Mitrofanov....
Fix wrong file name in header, noticed by David DeHaven, dave sagetv com.
Originally committed as revision 17158 to svn://svn.ffmpeg.org/ffmpeg/trunk
Add x264 SSE2 iDCT functions to H.264 decoder.
Originally committed as revision 16409 to svn://svn.ffmpeg.org/ffmpeg/trunk