tests/readlink.py

sslutil: move sslkwargs logic into internal function (API)

As the previous commit documented, sslkwargs() doesn't add any
value since its return is treated as a black box and proxied
to wrapsocket().

We formalize its uselessness by moving its logic into a
new, internal function and make sslkwargs() return an empty
dict.

The certificate arguments that sslkwargs specified have been
removed from wrapsocket() because they should no longer be
set.

#!/usr/bin/env python

from __future__ import print_function

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, '->', f, 'not a symlink')

sys.exit(0)