is_member_function_pointer added to type_traits

From: John Maddock (John_Maddock_at_[hidden])
Date: 2002-01-04 07:30:52

Dave,

I've added is_member_function_pointer to the type traits lib as requested. 
It works for Borland/MSVC/GCC, but the code is suffiently problematic that
it really needs testing with some other compilers as well, as there is a
very real risk of this addition breaking type_traits.hpp for some.

- John Maddock
http://ourworld.compuserve.com/homepages/john_maddock/