Update the type_traits intrinsics support to include the gcc-4.3 intrinsics.

Also added some braces to our testing macros to quieten gcc warnings.

[SVN r44013]

libs/type_traits

@@ -1 +1 @@
-Subproject commit 912045e6acb5f65bef68d1476ebefdeeedb7d650
+Subproject commit 713516cd7d89af1d50b4e95920302911a36d20cb