Make __autoconcat__ rewrites no longer able to return __autoconcat__ in their rewritten AST, and use this property to do only a single AST traversal for rewriting autoconcats.
Make __autoconcat__.rewrite(...) static. This could eventually be moved to MethodScriptCompiler instead.
__autoconcat__rewrites no longer able to return__autoconcat__in their rewritten AST, and use this property to do only a single AST traversal for rewriting autoconcats.__autoconcat__.rewrite(...)static. This could eventually be moved to MethodScriptCompiler instead.p()execs (no functional changes).