Revert "Compile FFmpeg on PowerPC-based machines without AltiVec support until it is fixed."

This reverts commit bc9eac0a.

This should fix the ppc lag we had.

Conflicts:

	extras/contrib/src/Makefile
(cherry picked from commit fa79d12d)

Conflicts:

	extras/contrib/src/Makefile

extras/contrib/src/Makefile

@@ -151,8 +151,6 @@ ifdef HAVE_DARWIN_OS
 X264CONF += --enable-pic
 ifdef HAVE_DARWIN_OS_ON_INTEL
 FFMPEG_CFLAGS += -DHAVE_LRINTF
-else
-FFMPEGCONF += --disable-altivec
 endif
 endif
 
@@ -1081,7 +1079,6 @@ ifdef HAVE_DARWIN_OS_ON_INTEL
 	(cd $@; patch -p0 < ../Patches/ffmpeg-macosx-intel-mmx.patch)
 endif
 ifdef HAVE_DARWIN_OS
-	(cd $@/libswscale; patch -p0 < ../../Patches/ffmpeg-fix-noaltivec.patch)
 	(cd $@/libswscale; patch -p0 < ../../Patches/ffmpeg-libswscale-head.patch)
 endif
 ifdef NO_TEXT_RELOCATION

extras/contrib/src/Patches/ffmpeg-fix-noaltivec.patch

-Index: swscale.c
-===================================================================
---- swscale.c	(revision 26515)
-+++ swscale.c	(working copy)
-@@ -880,7 +880,7 @@
- #endif
- 
- #ifdef ARCH_POWERPC
--#if (defined (HAVE_ALTIVEC) || defined (RUNTIME_CPUDETECT)) && defined (CONFIG_GPL)
-+#if (defined (HAVE_ALTIVEC)) && defined (CONFIG_GPL)
- #define COMPILE_ALTIVEC
- #endif //HAVE_ALTIVEC
- #endif //ARCH_POWERPC
-@@ -1553,11 +1553,13 @@
- 
- #else
- #ifdef ARCH_POWERPC
-+#ifdef COMPILE_ALTIVEC
-     if (flags & SWS_CPU_CAPS_ALTIVEC)
-         return swScale_altivec;
-     else
-         return swScale_C;
- #endif
-+#endif
-     return swScale_C;
- #endif /* defined(ARCH_X86) */
- #else //RUNTIME_CPUDETECT