email_confirm 6.x-1.5

#664334 in hook_user implementation, use $account instead of $user. Thanks to doq.
#666230 Add default values to function parameters for email_confirm_user_change_mail() and test to see if values passed to callback.
Update the account->login timestamp after a successful email change confirmation to enforce the one-time nature of the confirmation link.
#800684 Added preliminary Rules module support. Support for request email change event and confirm email change event.
#800784 Added integration with the Mail Edit module.