tests/test-doctest.py

Make hg add foo; hg mv foo bar work.

- foo will be removed (the user has a copy of its contents in bar)

- bar will not be marked as a copy (there was no committed version of foo).
  We print a warning telling that to the user.

Fixes issue269.

import doctest

import mercurial.changelog
# test doctest from changelog

doctest.testmod(mercurial.changelog)