LU-4266 build: fix lbuild to work with OFED-3.5-x

LU-4266 build: fix lbuild to work with OFED-3.5-x

* Remove OFED backport headers for all components except lnet.
* Move all OFED related autoconf testing into lnet/autoconf.
* After OFED built is done, there should only be one -devel rpm.
  We don't really need to filter out any version string.

Change-Id: If983ede2606e4c5c397f676cf16807f6e00318bc
Signed-off-by: Dmitry Eremin <dmitry.eremin@intel.com>
Reviewed-on: http://review.whamcloud.com/8451
Reviewed-by: James Simmons <uja.ornl@gmail.com>
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Bob Glossman <bob.glossman@intel.com>
Reviewed-by: Shuichi Ihara <sihara@ddn.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>