* develop-olympus:
[ticket/9802] Remove unnecessary htmlspecialchars() call on REMOTE_ADDR.
[ticket/9802] Only check for IPv4-mapped address when address is IPv6.
[ticket/9802] Fix tiny logic bug in loop determining REMOTE_ADDR.
[ticket/9802] Remove redundant character class definition from preg_replace.
[ticket/9802] Fix redundant str_replace call. No need to replace ' ' with ' '.
Conflicts:
phpBB/includes/session.php