OpenBSD: Add support for OpenBSD 5.4

OpenBSD: Add support for OpenBSD 5.4

Add param header files and other config info to provide
support for OpenBSD 5.4.

Reviewed-on: http://gerrit.openafs.org/11130
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Chas Williams - CONTRACTOR <chas@cmf.nrl.navy.mil>
Reviewed-by: D Brashear <shadow@your-file-system.com>
(cherry picked from commit e1d0342326d11a14e1fb0075fb62cc6be9389b97)

Change-Id: Ibdde973cf2a542fc89eba025b7210f8b0c843b95
Reviewed-on: http://gerrit.openafs.org/11700
Reviewed-by: Chas Williams - CONTRACTOR <chas@cmf.nrl.navy.mil>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Tested-by: BuildBot <buildbot@rampaginggeek.com>