Changed RubyPyProxy to inherit from BlankObject.
Changed RubyPyProxy to inherit from BlankObject.

--HG--
branch : devel

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