New defaults to support my config values.
use_plain_imap, use_crammd5_imap, use_digestmd5_imap, use_tls_imap
use_plain_smtp, use_crammd5_smtp, use_digestmd5_smtp, use_tls_smtp

I still need to do some research on TLS, so that might get ripped back out later. Since I was already doing the edits in this file, I added it Just In Case(tm).

New conf.pl to follow (after lunch!)