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

- Save errno values before calling warn(3) so that errors are correctly
reported.
- Check for malloc() failures.

Submitted by: gcooper
MFC after: 1 week

Add mptutil, a basic utility for managing MPT SCSI/SATA/SAS controllers.
Drive and controller status can be reported, basic attributes changed,
and arrays and spares can be created and deleted.

Approved by: re
Obtained from: Yahoo! Inc.