- 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 r290572,r290646,r290848,r290849:

r290572:

Integrate tools/regression/lib/libc/gen into the FreeBSD test suite
as lib/libc/tests/gen

The code in test-fnmatch that was used for generating:

- bin/sh/tests/builtins/case2.0
- bin/sh/tests/builtins/case3.0

has been left undisturbed. The target `make sh-tests` has been moved over
from tools/regression/lib/libc/gen/Makefile to
lib/libc/tests/gen/Makefile and made into a PHONY target

case2.0 and case3.0 test input generation isn't being done automatically.
This needs additional discussion.

Sponsored by: EMC / Isilon Storage Division

r290646:

Add missing licensing boilerplate to test-fnmatch.c

Carry over licensing author info from fnmatch_test.c (jilles@)

Sponsored by: EMC / Isilon Storage Division

r290848:

Fix -Wunused warnings

Sponsored by: EMC / Isilon Storage Division

r290849:

Fix -Wmissing-braces warnings by adding braces around all the
testcase inputs

Sponsored by: EMC / Isilon Storage Division

Integrate tools/regression/lib/libc/gen into the FreeBSD test suite
as lib/libc/tests/gen

The code in test-fnmatch that was used for generating:

- bin/sh/tests/builtins/case2.0
- bin/sh/tests/builtins/case3.0

has been left undisturbed. The target `make sh-tests` has been moved over
from tools/regression/lib/libc/gen/Makefile to
lib/libc/tests/gen/Makefile and made into a PHONY target

case2.0 and case3.0 test input generation isn't being done automatically.
This needs additional discussion.

MFC after: 1 week
Sponsored by: EMC / Isilon Storage Division

libc: Add some tests for fmtmsg().