Let imgresample altivec code build

Originally committed as revision 16093 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/Makefile

@@ -459,6 +459,7 @@ OBJS-$(ARCH_BFIN)                      += bfin/dsputil_bfin.o           \
 OBJS-$(ARCH_POWERPC)                   += ppc/dsputil_ppc.o             \
 
 ALTIVEC-OBJS-$(CONFIG_H264_DECODER)    += ppc/h264_altivec.o
+ALTIVEC-OBJS-$(CONFIG_OLDSCALER)       += ppc/imgresample_altivec.o
 ALTIVEC-OBJS-$(CONFIG_SNOW_DECODER)    += ppc/snow_altivec.o
 ALTIVEC-OBJS-$(CONFIG_VC1_DECODER)     += ppc/vc1dsp_altivec.o
 ALTIVEC-OBJS-$(CONFIG_WMV3_DECODER)    += ppc/vc1dsp_altivec.o