Implemented full support for remove_xxx on VC6.5 and VC7.0.

Based on the typeof hack also used by the boost::typeof library.


[SVN r33476]

libs/type_traits

@@ -1 +1 @@
-Subproject commit a7e866cc1bfc43b6c6a0718c6c627b537c68151e
+Subproject commit aba9d9e93dcc9009b5e6399f0320a73396859558