tests/readlink.py

wireprotoserver: don't import symbol from hgweb.common

Importing hgweb.common requires importing hgweb.
hgweb/__init__.py contains a bit of code and does imports of large
parts of the hgweb.* module tree.

All we need is a constant defining the integer status code for
HTTP OK. So just redefine HTTP_OK in wireprotoserver.py and avoid
the excessive imports.

Differential Revision: https://phab.mercurial-scm.org/D1967

#!/usr/bin/env python

from __future__ import absolute_import, print_function

import errno
import os
import sys

for f in sys.argv[1:]:
    try:
        print(f, '->', os.readlink(f))
    except OSError as err:
        if err.errno != errno.EINVAL:
            raise
        print(f, '->', f, 'not a symlink')

sys.exit(0)