[boost] function_equal and function::contains committed

From: Douglas Gregor (gregod_at_[hidden])
Date: 2004-03-11 22:58:56

Based on the discussion with Peter Dimov and Brian McNamara, I've checked in 
boost/function_equal.hpp with the new function_equal function. Overload 
boost::detail::function_equal_impl with a final argument of "int" in 
libraries that need to be compatible with older compilers. function_equal is 
documented as part of Boost.Function (because it needed a home somewhere 
inside BoostBook).

function<> now has a contains() member function and uses function_equal 
instead of operator ==.

        Doug