util: add missing r prefix on some __setattr__ calls # skip-blame just a pair of r prefixes Differential Revision: https://phab.mercurial-scm.org/D2560

tests: add some re and globs for test-revset on python3 At this point we're down to two deprecation warnings (which I suspect are showing a bug in the test?) and one weird-looking failure. Progress! Differential Revision: https://phab.mercurial-scm.org/D2559