Print less scary message if the system supports symlinks: "Skipping test-no-symlinks: system supports symbolic links" instead of "Skipping test-no-symlinks: unexpected feature: symbolic links"

import doctest

import mercurial.changelog
# test doctest from changelog

doctest.testmod(mercurial.changelog)

import mercurial.httprepo
doctest.testmod(mercurial.httprepo)