imap-del-for-mh.php: Better search result deal and output
imap-del-for-mh.php: Delete mail after imap move
imap-del-for-mh.php: Add subject as search condition

Also skip From: if no '@' include when search.
imap-del-for-mh.php: Use raw from address in search

Also skip Subject: if not well decoded.
imap-del-for-mh.php: Subject search as alternate for From
imap-del-for-mh.php: Disable search by Subject: