Make XVMC compilation depend on HAVE_XVMC, not HAVE_XVMC_ACCEL.

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@12654 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

libavcodec/Makefile

@@ -359,7 +359,7 @@ OBJS-$(HAVE_OS2THREADS)                += os2thread.o
 OBJS-$(HAVE_PTHREADS)                  += pthread.o
 OBJS-$(HAVE_W32THREADS)                += w32thread.o
 
-OBJS-$(HAVE_XVMC_ACCEL)                += xvmcvideo.o
+OBJS-$(HAVE_XVMC)                      += xvmcvideo.o
 
 ifneq ($(CONFIG_SWSCALE),yes)
 OBJS += imgresample.o