Update hook for D6->D7 upgrades.
Fixed bug whereby passwords always expired at 0 seconds, thereby forcing a perpetual changing of the password as reported by alakon in [#1041096]
Changes since DRUPAL-7--4-1:
Fixed regex rewrite problem. Better title values for sources. Other minor fixes.
This is the beta release. The api has stabalized. All the features from the 7 version are backported. Things are looking good.
Initial update for Drupal 7. Please reports bugs.