- Copy stable/10 (r259064) to releng/10.0 as part of the
10.0-RELEASE cycle.
- Update __FreeBSD_version [1]
- Set branch name to -RC1

[1] 10.0-CURRENT __FreeBSD_version value ended at '55', so
start releng/10.0 at '100' so the branch is started with
a value ending in zero.

Approved by: re (implicit)
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

Fixes to man8 groff mandoc style, usage mistakes, or typos.

PR: 168016
Submitted by: Nobuyuki Koganemaru
Approved by: gjb
MFC after: 3 days

mdoc: Remove leading garbage, empty lines and order preamble

Use the newly brought %U macro.

The last big commit: let usr.sbin/ use WARNS=6 by default.

Force the use of the tbl(1) preprocessor.

Sort sections.

Added the EXIT STATUS section where appropriate.

Get rid of obsolete MAN[0-9] syntax.

Markup nit picking.

Reviewed by: joerg

Fix an off-by-one error in the range check for the maximal -i or -o
block size.

Fix my own style(9) bugs:

. forward declare all static functions
. add a couple of redundant parens in return statements where they've
been missing
. remove the space after exit since it's a function

This commit was generated by cvs2svn to compensate for changes in r129330,
which included commits to RCS files with non-trunk default branches.