Removed external templates for unknown compilers.

Fixed std conformance bugs in v4 code (shown up by metrowerks compiler).


[SVN r18467]

libs/regex

@@ -1 +1 @@
-Subproject commit 8bb6861595d01c568a22dc5e6b0def4afea2fa3f
+Subproject commit 31d1dc11829f51c3f6cd6d0f62d4c328f330722f