*_ptr.hpp:

- Added detail::is_pointerlike_helper function templates for Signals

weak_ptr.hpp:
  - Added get_pointer function template for weak_ptr


[SVN r15099]

include/boost/weak_ptr.hpp

@@ -168,6 +168,19 @@ template<class T> shared_ptr<T> make_shared(weak_ptr<T> const & r) // never thro
     }
 }
 
+// mem_fn support
+
+template<class T> T * get_pointer(weak_ptr<T> const & p)
+{
+    return p.get();
+}
+
+namespace detail {
+  // is_pointerlike_helper enables Signals library to recognize intrusive_ptr
+  template<typename T>
+  type_traits::yes_type is_pointerlike_helper(const weak_ptr<T>&, int);
+} // end namespace detail
+
 } // namespace boost
 
 #ifdef BOOST_MSVC