Parser inherits from local Melbourne

--HG--
extra : amend_source : 8f049dd78e1da44fcf7dd16f6cbee187589276fe
Reflect changes from new rubinius-ast in Myco ast implementations
Use file tasks in Rakefile to avoid code generation when it's already latest
Use require_relative for sandbox in rake task instead of a child process VM
Correct comment in ast implementation
Added lexing of ? or ! at the end of an identifier
Added parsing of && and || logic operators
Allow parsing of multiple toplevel objects in a file

--HG--
extra : amend_source : 362e83d08f89b3b1ec533b30d9e9c480ad60e2bd
Start to bootstrap in Myco-space