LU-4735 lbuild: Build Xeon Phi client RPMs for SLES

autodetect_distro() returns DISTRO in following format:
  <name>-<major>.<minor>
The <minor> for SuSE Linux is patchlevel.

Adopt lbuild script for build Xeon Phi client RPMs for SLES.

Also add fake dependency to avoid add incorrect one.

Signed-off-by: Dmitry Eremin <dmitry.eremin@intel.com>
Change-Id: I1ef97a9da00078ae3093037d1a822fae95da87b1
Reviewed-on: http://review.whamcloud.com/9552
Tested-by: Jenkins
Reviewed-by: Bob Glossman <bob.glossman@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
LU-5397 obdclass: optimize busy loop wait

two optimizations in the busy loop wait in class_cleanup():
(1) remove unnecessary spinlocks protecting obd_conn_inprogress
    access
(2) replace cond_resched by more suitable yield to unconditionally
    yield the CPU if the condition check fails.

Xyratex-bug-id: MRP-1991
Signed-off-by: Alexander Zarochentsev <alexander_zarochentsev@xyratex.com>
Change-Id: I9079b2d04afda7d6db902392c6dcb216706a7ae4
Reviewed-on: http://review.whamcloud.com/11198
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com>
Tested-by: Jenkins
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>