tests/readlink.py

bundle2: add a ``bundle20.nbparts`` property

This property can be used to know how much parts have been added to the bundle2.
This will be useful to check if any part have been generated for a push.

#!/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)