More AST forwarding so common Rewriter can use proper full names.
Fix bug in debugger do-its: expressions should have the same enclosing object as the code being debugged, namely that of the method class not the receiver class.
More common rewriter work: super sends, scope of rewritten method, update to fixed accessModifier property of MethodASTs.
Also compile with respect to the method class to get the proper outer send targets (modulo the outstanding outer send to sibling bug).