Refactored PyMain delegation to call real methods properly.
Refactored PyMain delegation to call real methods properly.

--HG--
branch : devel

steeve/rupy,steeve/rupy,newcontext/rubypython,halostatue/rubypython,halostatue/rubypython,halostatue/rubypython,newcontext/rubypython,newcontext/rubypython