manifest: extract method for creating manifest text
Similar to the previous change, this one extracts a method for
producing a manifest text from an iterator over (path, node, flags)
tuples.
#!/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)