ADL protection

[SVN r24564]

include/boost/noncopyable.hpp

@@ -16,6 +16,8 @@ namespace boost {
 
 //  Contributed by Dave Abrahams
 
+namespace noncopyable_  // protection from unintended ADL
+{
   class noncopyable
   {
    protected:
@@ -25,6 +27,9 @@ class noncopyable
       noncopyable( const noncopyable& );
       const noncopyable& operator=( const noncopyable& );
   };
+}
+
+typedef noncopyable_::noncopyable noncopyable;
 
 } // namespace boost