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

Work around build breakages with GCC 4.2.

Reported by: tinderbox

Reduce diff with upstream.

Reimplement support for the ** (exponent) gnu extension, make it available thought the -g (mimic gnu) option

Reviewed by: cognet
Approved by: cognet
Discussed with: espie@OpenBSD.org (upstream)