Do not disable overloads for XMVECTOR for GNUC/clang when building with no-intrinsics (microsoft#141)

Author: walbourn

Inc/DirectXMath.h

@@ -93,7 +93,7 @@
 #define _XM_SVML_INTRINSICS_
 #endif
 
-#if !defined(_XM_NO_XMVECTOR_OVERLOADS_) && (defined(__clang__) || defined(__GNUC__))
+#if !defined(_XM_NO_XMVECTOR_OVERLOADS_) && (defined(__clang__) || defined(__GNUC__)) && !defined(_XM_NO_INTRINSICS_)
 #define _XM_NO_XMVECTOR_OVERLOADS_
 #endif