EX-4890 configure script changes system header and config files

EX-4890 configure script changes system header and config files

Remove the SUBDIRS target from configure tests.
Since Linux kernel version 2.6.x we can use target M.

Change-Id: I8e59bdaf2d0e4e08a659e08f63a14472fba72eb2
Signed-off-by: Alex Deiter <alex.deiter@gmail.com>
Reviewed-on: https://review.whamcloud.com/46603
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Jian Yu <yujian@whamcloud.com>
Reviewed-by: Minh Diep <mdiep@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>