Packaging support for MacOS X 10.9 "Mavericks".

Packaging support for MacOS X 10.9 "Mavericks".

Based on work originally done by Matt Haught <dmhaught@ncsu.edu>.

Reviewed-on: http://gerrit.openafs.org/10539
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>
(cherry picked from commit cb53d255a6285c884c6a5ea9a20427327b1ab9b3)

Change-Id: Ic537b46c7eb3f6b1e12a92ffbcffd5416a2a81d9
Reviewed-on: http://gerrit.openafs.org/10542
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>
Reviewed-by: Stephan Wiesand <stephan.wiesand@desy.de>