Build: link libaudit before util

Build: link libaudit before util

libaudit depends on util symbols, so link it first to avoid
unresolved symbols.  Include libaudit in the list of libs
instead of making it a special case.

Change-Id: Ide6d5f7e3ce8fd76b504088dcae3110872a87092
Reviewed-on: http://gerrit.openafs.org/6847
Tested-by: Derrick Brashear <shadow@dementix.org>
Reviewed-by: Derrick Brashear <shadow@dementix.org>