tests/readlink.py

filesets: use example with quotes for encoding predicate

A user on IRC was confused that "encoding(ASCII)" works and
"encoding(UTF-8)" fails with "parse error: encoding requires an
encoding name".

#!/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)