Better ARM support for mplayer/ffmpeg, ported from atty fork

while playing with some new hardware, I found it's running a forked mplayer
 -- and it looks like they're following the GPL.

 The maintainer's page is here: http://atty.jp/?Zaurus/mplayer
 Unfortunately it's mostly in Japanese, so it's hard to figure out any
  details.

  Their code looks quite interesting (at least to those of us w/ ARM CPUs).

  The patches I've attached are the patches from atty.jp with a couple of
  modifications by myself:
  - ported to current CVS
  - reverted their change of removing SNOW support from ffmpeg
  - cleaned up their bswap mess
  - removed DOS-style linebreaks from various files

patch by (Bernhard Rosenkraenzer: bero, arklinux org)

Originally committed as revision 4311 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/armv4l/mpegvideo_arm.c

@@ -21,6 +21,13 @@
 #include "../mpegvideo.h"
 #include "../avcodec.h"
 
+#ifdef HAVE_IWMMXT
+extern void MPV_common_init_iwmmxt(MpegEncContext *s);
+#endif
+
 void MPV_common_init_armv4l(MpegEncContext *s)
 {
+#ifdef HAVE_IWMMXT
+    MPV_common_init_iwmmxt(s);
+#endif
 }