[boost] [callback abstraction]Determining interest for proposal

I wrote a small library that attempts to abstract function calls. This proved me useful in the following situations: - when I need to find a callback function( lots of if's or big switch ) - when I deal with communication frames with opcodes - several other libraries use callback mechanisms( i.e: dbus ) and brings these advantages: - cleaner code( main objective ) - makes possible to isolate class implementations from the low level call - makes it easy to implement a polymorphism like mechanism Currentely, it's in beta phase. If enough interest is shown, there is surely room for minor improvements. Thanks, Miguel Tadeu