Strip git-hash from version in x264.pc

pkg-config doesn't like spaces in version string.

configure

@@ -1535,7 +1535,7 @@ includedir=$includedir
 
 Name: x264
 Description: H.264 (MPEG4 AVC) encoder library
-Version: $(grep POINTVER < x264_config.h | sed -e 's/.* "//; s/".*//')
+Version: $(grep POINTVER < x264_config.h | sed -e 's/.* "//; s/".*//; s/ .*//')
 Libs: -L$libdir -lx264 $([ "$shared" = "yes" ] || echo $libpthread $libm $libdl)
 Libs.private: $([ "$shared" = "yes" ] && echo $libpthread $libm $libdl)
 Cflags: -I$includedir