tests/readlink.py

hgweb: avoid bad $$ processing in graph (issue3601)

JavaScript .replace always magically processed $$ $& $' $` in replacement
strings and thus displayed subject lines incorrectly in the graph view.

Instead of regexps and .replace we now just create the strings the right way in
the first place.

#!/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)