and form validate/submit functions.  More code cleanup.
Functional changes:
- do OPTIMIZE in cron for mysqli too
- omit locked users in autocomplete
- add watchdog messages on attempts to use unauthorized folders
- after delete of message being viewed, return to folder it was in (was always inbox)
- make List messages in msg view link to containing folder (was always inbox)

avoid duplicates and extra noise when there are other messages.

Added as a user option, so any user can turn this off.
Also omit (0) after "my inbox" in menu link if there are no new messages.

privatemsg, to avoid error if not logged in (if already logged in, drupal
will redirect right to privatemsg)

create branch 'DRUPAL-4-7'.

Sprout from master 2006-06-09 14:53:06 UTC Alan Harder <mindless@33033.no-reply.drupal.org> 'Rollup of 8 pending patches, see http://drupal.org/node/67612'
Cherrypick from master 2006-06-09 18:33:03 UTC Alan Harder <mindless@33033.no-reply.drupal.org> 'Add table creation and utf8 update into privatemsg.install file':
    privatemsg.install

http://drupal.org/node/37691