Format source code again

*Bangs head against wall* Again, I’m sorry! I’m giving a wonderful
example about always committing formatted source code, aren’t I? Grr.
Add TokenFactory to RedHat backend

This is where the Ceylon → RedHat functions will get their tokens from.
(The plan is that an implementation will give you a TokenStream of the
generated tokens, and possibly even the option to interject whitespace
tokens, but we’re not there yet.)
Add Identifier conversion functions for RedHat backend
Add test.ceylon.ast.redhat module and package
Add SimpleTokenFactory to test.ceylon.ast.redhat

The real factory for ceylon.ast.redhat will be more sophisticated, but
this will do for now.
Add test for Identifier conversion functions (RedHat)