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

Print file names without stdio buffering to avoid mixing buffered and
unbuffered ouput.

PR: bin/176886
Reviewed by: mjg

Remove the advertising clause from UCB copyrighted files in usr.bin. This
is in accordance with the information provided at
ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change

Also add $FreeBSD$ to a few files to keep svn happy.

Discussed with: imp, rwatson

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.

Change the behaviour of -F slightly; it now persists (forever) in
trying to open files rather than giving up when it encounters an
error. ENOENT errors are not reported.

As a result, files that are moved away then recreated are not at
risk of being 'lost' to tail. Files that are recreated and
temporarily have unreadable permissions will be shown when they
are fixed.

This behaviour is consistent with the GNU version of tail but
without the verbiage that goes with the GNU version.

This change also fixes error messages accompanying -f and -F.
They no longer report problems with (null)!

MFC after: 3 weeks

Cast size_t to off_t before adding them to avoid warnings on the alpha.
Use %ld and intmax_t for printing an off_t.

Convert to ANSI style function definitions.

WARNS=2 fixes, use __FBSDID().

Fix tail to work on files bigger than 2GB.

PR: 14786
Reviewed by: iedowse

Properly constify some static arrays.

Also #if out some sccsid's and add rcsid's.

complete err() changes, actually use warn() in most instances

Dont forget to #include <err.h>

Argh! caught! *blush*.. This program was supplying it's own 'err' routine
which was slightly different to the libc one. To save any more cunfusion,
use the libc one.

This commit was generated by cvs2svn to compensate for changes in r1590,
which included commits to RCS files with non-trunk default branches.

BSD 4.4 Lite Usr.bin Sources