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

More -Wmissing-variable-declarations fixes.

In addition to adding `static' where possible:

- bin/date: Move `retval' into extern.h to make it visible to date.c.
- bin/ed: Move globally used variables into ed.h.
- sbin/camcontrol: Move `verbose' into camcontrol.h and fix shadow warnings.
- usr.bin/calendar: Remove unneeded variables.
- usr.bin/chat: Make `line' local instead of global.
- usr.bin/elfdump: Comment out unneeded function.
- usr.bin/rlogin: Use _Noreturn instead of __dead2.
- usr.bin/tset: Pull `Ospeed' into extern.h.
- usr.sbin/mfiutil: Put global variables in mfiutil.h.
- usr.sbin/pkg: Remove unused `os_corres'.
- usr.sbin/quotaon, usr.sbin/repquota: Remove unused `qfname'.

Removed unused code: fixes compiler warning with CC=gcc46
error: parameter 'fd' set but not used

Approved by: cperciva
MFC after: 1 week

The NetBSD Foundation has granted permission to remove clause 3 and 4
from their software.

Obtained from: NetBSD

ANSIfy almost all applications that use WARNS=6.

I was considering committing all these patches one by one, but as
discussed with brooks@, there is no need to do this. If we ever
need/want to merge these changes back, it is still possible to do this
per application.

Although the file has "ex:ts=4", do some " " -> \t translations
so that it is also nicely readable with ts=8.

Fix build on sparc64.

Bring in NetBSD's improvements and cleanups to NLS subsystem, making
it type and endian clean.

Also following changes were done:

. Remove of outdated support for generating of include files for
NLS catalogs being generated.
. Integrate my old code optimizations
. ANSI'fy prototypes
. Remove duplicate defines, and cleanup includes
. Remove first (unused) argument from error() function
. Const'ify (gencat now WARNS=8 clean)
. Convert corrupt() and nomem() functions to macros
. Add *temporary* note what '-new' command line argument is
deprecated now (instead of exiting with error message)

WARNING: format of generated .cat files is changed!

XXX: re-add support for *updating* of .cat files, NetBSD has this
functionality disabled

Obtained from: NetBSD (mostly)

Avoid unconditional increasing of variable leading to SIGSEGV, if req'd
parameter for -lang is missing.

Use mkstemp(3) to avoid /tmp race.

Add FBSDID. Spelling. Remove unused includes. Check more malloc failures.

Include missing header files which define functions for which gcc has
builtins (e.g., exit).

Submitted by: Mike Barcroft <mike@q9media.com>

Optimize gencat(1) sources in same manner as its libc part some time ago:

. remove SYSV compatibility bits
. sort #include's
. ifdef unused code
. cleanup BDECFLAGS warnings
. fixed few typos in diagnostics messages
. style(9) fixes

as part of this cleanup I have changed all K&R declarations to ANSI style.
Main reason for doing that was great mix of declarations used here - clean
ASNI , clean K&R, ifdef'ed (both).

Reviewed by: ache (mostly)

More egcs warning fixes:
o main returns int not void
o use return 0 at end of main when needed
o use braces to avoid potentially ambiguous else
o don't default to type int
o #ifdef 0 -> #if 0

Reviewed by: obrien and chuckr

Use err(3), remove unused variables.

Fix lseek arg by including unistd.h

Remove trailing whitespace.

Add the gencat command for creating message catalog fodder for the new
catgets* routines.
Obtained from: NetBSD