gcc 3.2.2 -O3 bug workaround (older gcc are very likely affected too but didnt check)

Originally committed as revision 1406 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/i386/dsputil_mmx_rnd.h

@@ -163,8 +163,8 @@ static void DEF(put, pixels16_l2)(uint8_t *dst, uint8_t *src1, uint8_t *src2, in
 	"addl	$32, %2			\n\t"
 	"subl	$2, %0			\n\t"
 	"jnz	1b			\n\t"
-	:"+g"(h), "+r"(src1), "+r"(src2), "+r"(dst)
-	:"r"(src1Stride), "r"(dstStride)
+	:"+a"(h), "+b"(src1), "+c"(src2), "+d"(dst)
+	:"S"(src1Stride), "D"(dstStride)
 	:"memory"); 
 }