bf8810d6bcba81de0452ef46963e46d128ea41f2 split some
email-related code into a separate directory, along
with references to five hooks, thus listed as
'Documented and not found':
* AbortTalkPageEmailNotification
* AlternateUserMailer
* SendWatchlistEmailNotification
* UpdateUserMailerFormattedPageStatus
* UserMailerChangeReturnPath
Change-Id: I7601ea2f2b0c4c9dcf802114e464be9af88fa5cb
$IP . '/includes/jobqueue/',
$IP . '/includes/json/',
$IP . '/includes/logging/',
+ $IP . '/includes/mail/',
$IP . '/includes/media/',
$IP . '/includes/page/',
$IP . '/includes/parser/',