tests/readlink.py

mpatch: use absolute_import

While I was here, I removed the try..except around importing cStringIO
because cStringIO should always be importable on modern Python versions.
We already do an unconditional import in other files.

#!/usr/bin/env python

import errno, os, 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, 'not a symlink'

sys.exit(0)