mercurial/templates/map-cmdline.compact

tests: fix test-chg to ignore a warning about being unable to set locale

This is apparently coming from bash when bash is providing the sh that we're
using to execute the .sh file generated by run-tests for this test.

Bash on my machine:
```
$ sh --version
GNU bash, version 5.1.4(1)-release (x86_64-pc-linux-gnu)
Copyright (C) 2020 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>

This is free software; you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

$ sh
sh-5.1$ LC_CTYPE=unsupported_value echo hi
sh: warning: setlocale: LC_CTYPE: cannot change locale (unsupported_value): No such file or directory
hi
```

Differential Revision: https://phab.mercurial-scm.org/D10468

[templates]
ldate = '{label("log.date",
                "{date|isodate}")}'

ldesc = '{label('ui.note log.description',
                      '{desc|strip}')}'
ldescfirst = '{label('ui.note log.description',
                     '{desc|firstline|strip}')}'

changeset = '{lrev}{tags}{bookmarks}{parents}   {lnode}   {ldate}   {luser}\n  {ldescfirst}\n\n'
changeset_quiet = '{lrev}:{lnode}\n'
changeset_verbose = '{lrev}{tags}{parents}   {lnode}   {ldate}   {lauthor}\n  {ldesc}\n\n'
lrev = '{label("log.changeset changeset.{phase}",
              "{rev}")}'
lnode = '{label("log.node",
                "{node|short}")}'
lauthor = '{label("log.user",
                  "{author}")}'
luser = '{label("log.user",
                "{author|user}")}'
start_tags = '['
tag = '{label("log.tag",
              "{tag},")}'
last_tag = '{tag}]'
start_parents = ':'
parent = '{lrev},'
last_parent = '{lrev}'
start_bookmarks = '['
bookmark = '{label("log.bookmark",
                   "{bookmark},")}'
last_bookmark = '{bookmark}]'