Added PyMainClass to delegate much of functionality of __main__ and __builtin__ modules
Added PyMainClass to delegate much of functionality of __main__ and __builtin__ modules

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