FBSD: 10.1 is coming out soon

The 10.1 release cycle is starting in a month, so let's get ahead of
the curve by adding the config bits now.

Reviewed-on: http://gerrit.openafs.org/11328
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
(cherry picked from commit 2809bae58851ce9168ca8b18c94360392b8a609f)

Change-Id: I71779d247725c48ee362e4ff8e9356ce060863d4
Reviewed-on: http://gerrit.openafs.org/11369
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Chas Williams - CONTRACTOR <chas@cmf.nrl.navy.mil>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Reviewed-by: Stephan Wiesand <stephan.wiesand@desy.de>