tests/test-gendoc-it.t

templater: add template path to __base__ search

This does a fall-back check for style files or directories that are
in Mercurial's template path for user convenience.

We intentionally don't use this for the built-in coal style because we don't
want the style to mysteriously break if the working directory just
happens to have a file named "paper".

#require docutils gettext

  $ $TESTDIR/check-gendoc it
  checking for parse errors