LU-15939 build: configure script changes system header and config files

LU-15939 build: 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.

Lustre-change: https://review.whamcloud.com/47604
Lustre-commit: 9a013c0c217aae50fbeb3016dc7a389ff53bd347

Test-Parameters: trivial clientdistro=ubuntu2004
Test-Parameters: trivial clientdistro=el8.5

Change-Id: I8e59bdaf2d0e4e08a659e08f63a14472fba72eb2
Signed-off-by: Alex Deiter <alex.deiter@gmail.com>
Reviewed-on: https://review.whamcloud.com/47742
Tested-by: jenkins <devops@whamcloud.com>
Reviewed-by: Yang Sheng <ys@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>