LU-2675 lustre: remove linux/lustre_lib.h

LU-2675 lustre: remove linux/lustre_lib.h

Remove lustre/include/linux/lustre_lib.h. Remove some unused
declarations from lustre/include/lustre_lib.h and move some others to
more natural headers.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Change-Id: I30b032e5e766cc052dbf6af34eb2e5d3f1af589e
Reviewed-on: http://review.whamcloud.com/11500
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Bob Glossman <bob.glossman@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>