templatekw: minimize resource dependency of {envvars} and {termwidth} These keywords can be evaluated without a repo.

templatekw: simply override {graphwidth} function by mapping variable

remotenames: drop redundant templatekw names from help text Also removed the second "List of" phrase, which is obvious from the type "List of strings."

narrow: drop redundant templatekw/revset names from help text ":<name>:" is automatically added by the registrar.

run-tests: don't mask errors when a server fails to start There are sporadic instances of this on Windows. They seem to happen more frequently after the test machine is rebooted, although the only way to hit it on my laptop is to loop certain tests with -j9 for hours. The problem with masking out the specific failure is that there's no way to know if it's the same line in the test that's failing, or if it is random. The justification for adding this masking in 52e9e63f1495 was that the failures occur regularly, but that's not the case anymore. The port number is still printed, in case that turns out to be useful.

py3: use bytes instead of str in isinstance Internally we use bytes everywhere, and str on Python 3 is unicodes, so we need to make sure we are doing the right check. Differential Revision: https://phab.mercurial-scm.org/D2458

py3: convert a map expression into list comprehension map returns a map object on Python 3 and here we wanted a list instead. Differential Revision: https://phab.mercurial-scm.org/D2456