tests/readlink.py

statecheck: added support for STATES

This removes `STATES` from `state.py` and adds support to
`statecheck` class to handle its features.
`getrepostate()` function is modified accordingly.

This adds a method 'cmdutil.addunfinished()' for appending to
the unfinishedstate list so as to keep 'merge' and 'bisect' at the last.

This also makes two separate message formats for `checkunfinished()` and
`getrepostate()` as there were previously present.

Results of test changed are shown.

Differential Revision: https://phab.mercurial-scm.org/D6503

#!/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)