tests/test-locale.t

urlutil: introduce a new `list_paths` function

This function will be useful for command and template that wants to display path
related information.

Differential Revision: https://phab.mercurial-scm.org/D10440

  $ LANG=nonexistent LC_ALL=nonexistent LANGUAGE=nonexistent hg version -q
  Mercurial Distributed SCM (version *) (glob)