* ext/etc/etc.c (etc_nprocessors_affinity): use sched_getaffinity
  for getting precious number of available cpus.

* ext/etc/etc.c (etc_nprocessors): use etc_nprocessors_affinity if
  possible.

  [Feature #10267] etc-nprocessors-kosaki2.patch



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47939 b2dd03c8-39d4-4d8f-98ff-823fe69b080e