MFC r267667:
use .Mt to mark up email addresses consistently (part1)

PR: 191174
Submitted by: Franco Fichtner <franco at lastsummer.de>

MFC r287396:

It's 2015, and some people are still trying to use fdisk and then
go asking what debug flags to set for GEOM to make it work. Advice
them to use gpart(8) instead.

Something similar should probably done with disklabel,
but I need to rewrite the disklabel examples first.

Sponsored by: The FreeBSD Foundation

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

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

Cross-reference gvinum(8) instead of vinum(8).

o Fix typo.

Obtained from: DragonFlyBSD

Grammatical improvement.

Don't default to '/var/tmp/ffsinfo' for the output of ffsinfo(8), since
/var/tmp is a world-writable directory.

MFC after: 3 days
Reported by: Jon Passki <cykyc@yahoo.com>

Sort sections.

Clarify behaviour of ffsinfo: It appends to outfile without
removing any existing contents.

PR: bin/61473
Submitted by: Alex Popa <razon@ldc.ro>
MFC after: 7 days
Approved by: rwatson (mentor)

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

Update ffsinfo(8) to use new UFS2 support in the growfs(8) debugging
functions. Largely consists of renaming fields and types to be aware
of the UFS1/UFS2 distinction, relying on libufs(3) to open and sanity
check the device/file/label accessed.

Since libufs(3) now handles label/UFS interactions, remove -L argument.

Note: when submitted, this patch had substantial style changes. I've
attempted to remove the restyling from the patch to separate the
functional and style changes.

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

s/filesystem/file system/g as discussed on -developers

mdoc(7) police: nits.

more file system > filesystem

Use `The .Nm utility'

"-" now sends output to stdout.

MFS: in HISTORY section, fix release number of first appearance

Remove whitespace at EOL.

mdoc(7) police: remove extraneous .Pp before and/or after .Sh.

Prepare for mdoc(7)NG.

Mdoc(7)ify.

corrected spelling mistakes in comments
check a couple of mallocs
usage of errx
linebreaks of DBG_ macros,
correcting the usage of nroff macros

Submitted by: grog, charnier
Reviewed by: chm

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

Reviewed by: grog