2 - Deal with component downwards compatibility in 5.71 (make 5.71 call
3 mooses construction logic so that attributes get initialized etc).
4 - Provide an extension so that components can have a Moose::Object
5 constructor and an @ISA which makes c3 happy on both 5.7X and 5.8X.
13 - vs 5.70 and optimisation as needed on perl 5.8 (5.10 is already faster!).