replaced the DELETE/INSERT on the account_reminder table with and UPDATE or INSERT using drupal_write_record().

used in the settings page and for mail messages when there is no user defined default.
Reworked the hook_mail implementation to make use of the user_mail_tokens function.

and body to change % placeholders to ! placeholders per http://api.drupal.org/api/function/t/6

removed t() calls from schema API table and field descriptions per notes on http://drupal.org/node/322731

the account_reminder_msg variable. thanks to silid for reporting.

user access record to user login record for test.

added settings form validation function.

#134857 & #123962 should be fixed with change in table schema.
Removed unneeded indexes.

#134857 & #123962 should be fixed with change in table schema.
Removed unneeded indexes.
Drupal coding standards changes.
Wrapped bulk of module strings in t() functions.

New feature added to allow users to opt out of revieving account reminder emails