py3: get bytes-repr of network errors portably This resolves a lot of weird issues in Python 3 around error strings. Differential Revision: https://phab.mercurial-scm.org/D2295

hgweb: open server logs in binary mode This is consistent with when we're logging to stdout, so we don't have to do something annoyingly complicated in the logging infrastructure. Differential Revision: https://phab.mercurial-scm.org/D2294

tests: add some b prefixes in test-http-bundle1.t # skip-blame just some b prefixes Differential Revision: https://phab.mercurial-scm.org/D2293

hgweb: correctly bytes-ify status, not string-ify Differential Revision: https://phab.mercurial-scm.org/D2291

printenv: port to python3 Differential Revision: https://phab.mercurial-scm.org/D2290

py3: whitelist another eight passing tests Differential Revision: https://phab.mercurial-scm.org/D2281

remotenames: port partway to python3 by using collections.MutableMapping test-logexchange.t doesn't pass after this, but at least the remotenames extension can be imported. Differential Revision: https://phab.mercurial-scm.org/D2280

tests: avoid referring to pvec in demandimport test Nothing else currently uses pvec, so we may want to delete it (but Augie Fackler says he may want to use it). To enable deletion, this patch replaces it by the error module in the demandimport test (any module works). However, since the error module had already been loaded at this point in the test (via the util module), I moved it earlier in the test so it's still not loaded (although I'm not sure if that's even relevant to the test). Differential Revision: https://phab.mercurial-scm.org/D2287

help: use cmdutil.parsealiases() to resolve command name This seems slightly better than parsing '^command|name' string by using an ad-hoc pattern.

help: list deprecated and experimental extensions if --verbose This is common in the other help topics.