- Copy stable/10@285827 to releng/10.2 in preparation for 10.2-RC1
builds.
- Update newvers.sh to reflect RC1.
- Update __FreeBSD_version to reflect 10.2.
- Update default pkg(8) configuration to use the quarterly branch.[1]

Discussed with: re, portmgr [1]
Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

MFC r282067:

Integrate tools/regression/fifo into the FreeBSD test suite as tests/sys/fifo
and tools/regression/file into the FreeBSD test suite as tests/sys/file

Integrate tools/regression/fifo into the FreeBSD test suite as tests/sys/fifo
and tools/regression/file into the FreeBSD test suite as tests/sys/file

MFC after: 1 week

Integrate tools/regression/file into the FreeBSD test suite as tests/sys/file

Integrate more tests into the FreeBSD test suite from tools/regression, etc

Make this compile with WARNS=6 and clang/gcc

MFC after: 3 days
Sponsored by: EMC / Isilon Storage Division

Make this compilable on latest Linux'es without warnings.

Sponsored by: The FreeBSD Foundation
MFC after: 1 week

Add a regression test for multiple threads of the same process acquiring the same fcntl lock.

Approved by: dfr (mentor)

Re-implement the client side of rpc.lockd in the kernel. This implementation
provides the correct semantics for flock(2) style locks which are used by the
lockf(1) command line tool and the pidfile(3) library. It also implements
recovery from server restarts and ensures that dirty cache blocks are written
to the server before obtaining locks (allowing multiple clients to use file
locking to safely share data).

Sponsored by: Isilon Systems
PR: 94256
MFC after: 2 weeks

Fix the __FreeBSD_version check.

Add some regression tests for posix record locks.