Fix issue934009: Have New Issues Submitted By Email *Not* Change Body! The mailgw config options: keep_quoted_text and leave_body_unchanged can now have a new values: new. If set to new, keep_quoted_text acts like yes if the message is starting a new issue. Otherise it strips quoted text. This allows somebody to start a new issue by forwarding a threaded email (with multiple quoted parts) into roundup and keeping all the quoted parts. If leave_body_unchanged is set to new, even the signature on the email that starts a new issue will be preserved.