Fix the Import

Fixed.
http://drupal.org/cvs?commit=491598
http://drupal.org/cvs?commit=491600

(The variable names were changed to match the ones in flag_get_default_flags().)

And I added backward compatibility code:
http://drupal.org/cvs?commit=491602
http://drupal.org/cvs?commit=491604

It matches the one in flag_get_default_flags().

(I don't like this bloat so I didn't include it at the beginning. But, on second thought, perhaps some users are keeping a lot of configuration in old text files --we don't want to make them sad.)