#276941: Workaround update patch to account for D-5 installations that had this module enabled prior to the 5703 update.

Switched from {user}->data back to og_uid_global for storing autosubscription options. Introduced hook_user.

Added an og_notifications table and migrated og_uid_global data into it.

Removed og_uid_global and vestigial og_uid_global code from og.install; moved the rest to og_notifications.

Accidentally changed the behaviour of the administrator-set default autosubscribe option. However, this might be for the better. Now, changes to the site-wide option propagate to any users who haven't overridden the option for their own accounts.

Worked around an expensive user_load call in the upgrade function. Haven't noticed any issues as of yet.

Added code to migrate the og_notification variable.

Added missing variable_del calls to hook_uninstall.

Removed variable og_omitted_email_node_types from og.install - does not appear to be required any longer.

#276941: Remove mail / no mail options from group types : Move update patch to og_notifications; Add migration.

#276941: Move admin messages to notifications_lite rather than use messaging directly. Invite support is no longer being handled by og_notifications. notifications_lite is now a new prereq.

.install: Typo fixes + add a @todo.

#290766 group admins were missing their powers when og_access disabled. reworked og_is_node_admin(). as a result, we no longer require that the group node be authored in the default input format.