py3: make files use absolute_import and print_function
This patch includes addition of absolute_import and print_function to the
files where they are missing. The modern importing conventions are also followed.
#!/usr/bin/env python
from __future__ import absolute_import, print_function
import errno
import os
import 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, '->', f, 'not a symlink')
sys.exit(0)