tests/readlink.py

destupdate: also include bookmark related logic

For the same reason, we move the bookmark related update logic into the
'destupdate' function. This requires to extend the returns of the function to
include the bookmark that needs to move (more or less) and the bookmark to
activate at the end of the function. See function documentation for details on
this returns.

#!/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)