Document r261865.

Sponsored by:	The FreeBSD Foundation
Document r261674.

Sponsored by:	The FreeBSD Foundation
Document r261510.

Sponsored by:	The FreeBSD Foundation
Document r261483.

Sponsored by:	The FreeBSD Foundation
Document r261375.

Sponsored by:	The FreeBSD Foundation
Move xz(1), Sendmail, and BIND entries to the contributed software
section.

Sponsored by:	The FreeBSD Foundation