switch to https://github.com/PHPMailer/PHPMailer

commit 4d9434e394496a5bb7acd9e73046587184b413df
Author: Synchro <marcus@synchromedia.co.uk>
Date:   Thu Apr 11 18:45:39 2013 +0200

5.2.6 release
add .gitreview

Change-Id: Iac456dc8904946149947daa802706628d05c7c24