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

Update $NetBSD$ ID

NetBSD mkfs_msdos.h rev 1.3 removed the no-endorsement clause from the
license block, which had already been done in the source I imported in
r289629.

newfs_msdos: use NetBSD's mkfs_msdos.h verbatim for makefs compatibility

Sponsored by: The FreeBSD Foundation

newfs_msdos: move mkfs_msdos to separate file for later use in makefs

Sponsored by: The FreeBSD Foundation