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

Reintegrate colldef(1) and mklocale(1)

While those tools are not needed anymore they are necessary to build FreeBSD 9
and 10. it does not hurt to keep those tools around until both 9 and 10 branch
become EOLed.

Modify colldef(1) to build after the change in the collation header, and ensure
it does produce the same collation definition it used to generate for 9 and 10

Reported by: Oliver Pinter

Rewrite buffer handling code a bit to handle large values.
Add more checks for data overflow.

Move extern definitions to common.h
Increase charmap symbol length to 64