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

Apply local patches to mandoc and connect it to the build.

- adds a couple more library strings used in the tree
- changes some more to the current groff spelling
- changes page footer to match groff style

Merge mandoc from vendor into contrib and provide the necessary Makefile glue.

It's not yet connected to the build.

Vendor import of mdocml 1.12.1

It is a suite of ISC licensed tools to compile and render mdoc/man pages and
will replace groff for formatting manpages in the base system.

http://mdocml.bsd.lv/