tests/readlink.py

mq: use `revs.sort()` to ensure the set is ascending

Sorting is super-cheap with the new smartset class, so we can use it to enforce
the order. Otherwise all smartset classes would have to allow direct indexing.

#!/usr/bin/env python

import errno, os, sys

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

sys.exit(0)