privat/nit — pull request #434 by privat (2014-05-01 17:47:37+00:00)
Title: Simplify AMethPropdef

Perpare the change of the hierarchies of subclasses of AMethPropdef.

The first two commits generalize services of subclasses.
The rest updates clients to not statically rely on such a subclass.

This will permit the refactorization and the rationalization of the parser and the AST.