Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by: re (implicit)

mdoc: order prologue macros consistently by Dd/Dt/Os

Although groff_mdoc(7) gives another impression, this is the ordering
most widely used and also required by mdocml/mandoc.

Reviewed by: ru
Approved by: philip, ed (mentors)

Clarify the BUGS section.

Reported by: asmodai
Submitted by: jhb

mdoc(7) police: minor formatting/spelling fixes.

Man page for orm driver.

PR: 22078
Submitted by: Nikolai Saoukh <nms@otdel-1.org>