Copy stable/11@r303970 to releng/11.0 as part of the 11.0-RELEASE
cycle.

Prune svn:mergeinfo from the new branch, and rename it to RC1.

Update __FreeBSD_version.

Use the quarterly branch for the default FreeBSD.conf pkg(8) repo and
the dvd1.iso packages population.

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

Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

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

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

Also, fix eui64_aton_test:test_str(..). The test was comparing the result
of eui64_aton to a pointer of the expected result.

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

Fix stupid patch(1) tricks. Apparently patch thinks all files match the
empty file so if you accidently apply a patch created with diff -N
twice, you get files with duplicate contents.

Reported by: Antoine Brodin <antoine.brodin at laposte.net>

Add support for an /etc/eui64 file modeled on /etc/ethers. The API is
modeled on ethers(3) except that all functions are thread-safe.

Reviewed by: simokawa