Move cpus_in_affinity_mask() to cpu-set-util.[ch]
It just seems to fit better there and it's always better to have things
in shared/ rather than basic/.
(cherry picked from commit f44b3035d4a698aa0ce08a552199b54d43de3d85)
Related: #1734787
patch_name: 0273-Move-cpus_in_affinity_mask-to-cpu-set-util.-ch.patch
present_in_specfile: true
location_in_specfile: 273
squash_commits: true