Copy stable/10@r272459 to releng/10.1 as part of
the 10.1-RELEASE process.

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

Remove unnecessary cast

Spelling fixes for usr.bin/

ANSIfy various tools in usr.bin/.

Most of these tools properly build at WARNS=6, except for their K&R
function declarations. Fix this, so we can bump WARNS as well.

Revert most part of 200420 as requested, as more review and polish is
needed.

Remove unneeded header includes from usr.bin/ except contributed code.

Tested with: make universe

Use NULL instead of 0 for the return value of fopen().

Approved by: re (kensmith)

Fix some warnings by making things const, adding missing headers,
removing some unused variables and making a variable unsigned.

MFC after: 3 weeks

remove __P

Style improvements recommended by Bruce as a follow up to some
of the recent WARNS commits. The idea is:

1) FreeBSD id tags should follow vendor tags.
2) Vendor tags should not be compiled (though copyrights probably should).
3) There should be no blank line between including cdefs and __FBSDIF.

Use __FBSDID(). Also do a bit of cosmetic #if and header-order
cleaning-up.

Sort includes.

WARNS=2 fixes.

Reviewed by: bde (a while back)

o Restore previous inconsistent style to login_fbtab.c, following its
modification to add glob support. The submitted patch used a degraded
form of KNF.

Reviewed by: bde

o Modify format of /etc/fbtab to accept glob matching patterns for
target devices, not just individual devices and directories. This
permits activities such as:

ttyv0 0600 /dev/dsp*

Whereas previously that was not supported. This change is
backwards-compatible, except where device names included globbing
characters, which is not the case for any devices listed in MAKEDEV.

Submitted by: Maxime Henrion <mux@qualys.com>
MFC after: 3 weeks

Add `_PATH_DEVZERO'.
Use _PATH_* where where possible.

Fix excessive use of parenthesis in previous commit.

Requested by: bde

Do not issue a warning when chflags() fails with EOPNOTSUPP.

PR: 17875
Submitted by: Bjoern Fischer <bfischer@Techfak.Uni-Bielefeld.DE>

Clear all file flags when taking ownership of devices. Do not ignore
chown failures in some places, but instead log them like we do all
other errors.

gcc on alpha complains about nested comments. A comment in this
file referred to a path ending in "/*" which was reasonable to me,
but gcc wasn't so sure. So now the comment refers to a path ending in
"*".

Changes for KTH KerberosIV.
Also quieten -Wall a bit.

Remove trailing whitespace.

Set copyright so we can actually distribute and use it.

Reviewed by: David Greenman
Submitted by: Wietse Venema
Obtained from:

Implemnet fbtab ala SunOS (thanks to WZV, see login_fbtab.c)
Reviewed by:
Submitted by: guido