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)

Parenthesised string literals are invalid in initialisers for character arrays.
Use braces instead.

Commit 1 of 2 to fix ffsinfo(8) for UFS2.

Add support for UFS2 to the UFS debugging routines in growfs; required
to update ffsinfo(8) for UFS2. A variety of types and fs variables are
renamed to reflect UFS1/2 structures. Also, the print routines for
inodes are now split into separate UFS1 and UFS2 versions. We now
define dbg_dump_csum_total(), but lose the printing of rotational
information since that's not present in UFS2. In the future, we may
want to re-add this functionality to print it solely for UFS1.

Submitted by: Lukas Ertl <l.ertl@univie.ac.at>
PR: bin/53517

added growfs(8) including ffsinfo(8) to the freebsd base system

Reviewed by: grog