[Truffle] Fix compilation of hash literals by making put and get on HashMap slow paths.
[Truffle] Fix copy-paste bugs in the new long Fixnum code.
[Truffle] Document where declaring module in a method gets set.
[Truffle] Store the method object in the root node of all method ASTs.
[Truffle] Use the declaring module for super lookups, rather than the super of self.
Merge branch master into truffle-head.