OSXPreferencePane

OSXPreferencePane
checkAfsStatusForStartup method modification for search /afs volume for determinate if afs is on has been transfered into checkAfsStatus. checkAfsStatusForStartup method is used to check when afs start axitn system startup. Anyway these are only workaround we must use osx api or afs api to make this job.

Change-Id: If9be5a91418eccc0c58a69b566af140d619d3057
Reviewed-on: http://gerrit.openafs.org/1492
Reviewed-by: Claudio Bisegni <Claudio.Bisegni@lnf.infn.it>
Tested-by: Claudio Bisegni <Claudio.Bisegni@lnf.infn.it>
Reviewed-by: Derrick Brashear <shadow@dementia.org>
Tested-by: Derrick Brashear <shadow@dementia.org>