Update response to 'cpuid' to claim MMXness.  Revised magic number
supplied by JeremyF.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@1487 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/coregrind/vg_helpers.S b/coregrind/vg_helpers.S
index b2af7d7..25f5383 100644
--- a/coregrind/vg_helpers.S
+++ b/coregrind/vg_helpers.S
@@ -147,7 +147,7 @@
 	movl	$0x52b, %eax
 	movl	$0x0,   %ebx
 	movl	$0x0,   %ecx
-	movl	$0x1bf, %edx
+	movl	$0x008001bf, %edx
 	jmp	cpuid__99
 cpuid__0:
 	movl	$0x1,        %eax