Do not compile imdct and downmix modules anymore.

configure.ac.in

@@ -703,7 +703,7 @@ dnl
 PLUGINS="${PLUGINS} dummy rc logger access_file memcpy"
 PLUGINS="${PLUGINS} es audio mpeg_system ps ts"
 PLUGINS="${PLUGINS} idct idctclassic motion mpeg_video spudec mpeg_audio"
-#PLUGINS="${PLUGINS} a52old imdct downmix"
+#PLUGINS="${PLUGINS} a52old imdct downmix imdct3dn downmix3dn imdctsse downmixsse"
 PLUGINS="${PLUGINS} lpcm a52"
 PLUGINS="${PLUGINS} deinterlace invert adjust wall transform distort clone crop motionblur"
 PLUGINS="${PLUGINS} float32tos16 float32tos8 float32tou16 float32tou8 a52tospdif fixed32tofloat32 fixed32tos16 s16tofloat32 s16tofloat32swab s8tofloat32 u8tofixed32 u8tofloat32"
@@ -722,8 +722,8 @@ dnl  Accelerated modules
 dnl
 MMX_MODULES="memcpymmx idctmmx motionmmx i420_rgb_mmx i420_yuy2_mmx i422_yuy2_mmx i420_ymga_mmx"
 MMXEXT_MODULES="memcpymmxext idctmmxext motionmmxext"
-THREEDNOW_MODULES="memcpy3dn imdct3dn downmix3dn"
-SSE_MODULES="imdctsse downmixsse"
+THREEDNOW_MODULES="memcpy3dn"
+SSE_MODULES=""
 ALTIVEC_MODULES="idctaltivec motionaltivec memcpyaltivec"
 
 AC_CACHE_CHECK([if \$CC groks MMX inline assembly],