Revision 491673

- Add CMAKE options properly.
- Add SASL as an OPTIONS_DEFINE.
- Bump PORTREVISION.

PR:		234929 and 235302
Submitted by:	Derek Schrock <dereks@lifeofadishwasher.com>,
		O. Hartmann <ohartmann@walstatt.org>,
		Chad Jacob Milios <milios@ccsys.com>
Tested by:	many
Differential Revision:	https://reviews.freebsd.org/D19009