Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.Approved by: re (implicit)Sponsored by: The FreeBSD Foundation
MFC: r255977 (partial)Sweep man pages replacing ad -> ada.
Copy head to stable/9 as part of 9.0-RELEASE release cycle.Approved by: re (implicit)
Revise markup.
Add a man page for ext2fs.