- 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)

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

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

fnmatch(): Add test for r254091 (pattern with single backslash).

This test cannot be converted to an sh(1) test because the syntax would be
invalid.

PR: 181129
MFC after: 1 week

Generate some tests for sh's case command from the fnmatch tests.

I'm committing the generated files because I don't like a build dependency
for the sh(1) tests, and they are small and will not change much.

fnmatch: Fix bad FNM_PERIOD disabling if an asterisk has been seen.

Example: fnmatch("a*b/*", "abbb/.x", FNM_PATHNAME | FNM_PERIOD)

PR: 116074
MFC after: 1 week

Add some tests for fnmatch(3).

MFC after: 1 week