tests/readlink.py

bundle2: clarify in docstring that header size is for a single header

The docstring for the header size field currently says "The total
number of Bytes used by the part headers", but the size is about a
single header, so let's change it to "header".

#!/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)