- Copy stable/10@296371 to releng/10.3 in preparation for 10.3-RC1
builds.
- Update newvers.sh to reflect RC1.
- Update __FreeBSD_version to reflect 10.3.
- Update default pkg(8) configuration to use the quarterly branch.

Approved by: re (implicit)

MFC r264400,r265836:

r264400:

NO_MAN= has been deprecated in favor of MAN= for some time, go ahead
and finish the job. ncurses is now the only Makefile in the tree that
uses it since it wasn't a simple mechanical change, and will be
addressed in a future commit.

r265836:

Remove last two NO_MAN= in the tree. In both of these cases, MAN= is
what is needed.

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

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

Fix typo.

Submitted by: ae

Improve example, so that it doesn't dump core when example module
isn't loaded.

Fix the syscall module name after r205320.

Submitted by: Vladislav Movchan <vladislav.movchan gmail com>
MFC after: 1 week

Conform style.Makefile(5) and replace = and += with ?=, which lets you to
override WARNS.

Reported by: <marius@nuenneri.ch> and uqs@

Small cleanup while being here:
- sort includes
- remove usage(), since it seems to come from older version
of the KLD
- remove unnecessary variable
- mark argc/argv as unused

Bring WARNS = 5 to the Makefile.

Include stdlib.h for exit(3) and unistd.h for syscall(2). This makes
this program to compile cleanly.

Style.

Start the dreaded NOFOO -> NO_FOO conversion.

OK'ed by: core

For variables that are only checked with defined(), don't provide
any fake value.

$Id$ -> $FreeBSD$

Use modstat(2) to get the syscall number.

Replace the misc example with a simpler syscall example using the new
module registration hooks for syscalls.

Submitted by: Assar Westerlund <assar@sics.se>