tests/readlink.py

cvsps: add two more tiebreakers in cscmp

test-convert-cvs.t has been a little flaky for a while now. Add an
extra tiebreaker in cscmp so that all the cases in the test will sort
reliably.

Without this patch, test-convert-cvs.t failed after 346 runs. With
this patch, I stopped trying to get it to fail after 615 runs. While
not conclusive, that makes me pretty optimistic that this is a working
fix.

#!/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)