Merge branches 'per-cpu-thread-hotplug-v3-fixed', 'task-placement-v1', 'cpu-hotplug-get_online_cpus-v1', 'arm-asymmetric-support-v3-v3.6-rc1', 'rcu-hotplug-v1' and 'config-fragments' into big-LITTLE-MP-v8

Updates:
- Based on v3.6-rc5
- applied sched: "fix arch_get_fast_and_slow_cpus to get logical cpumask
  correctly" to task-placement-v1 branch
- new branch from Paulm: rcu-hotplug-v1

Commands used for merge:
$ gco -b big-LITTLE-MP-v8 v3.6-rc5
$ git merge per-cpu-thread-hotplug-v3-fixed per-task-load-average-v3
  task-placement-v1 cpu-hotplug-get_online_cpus-v1
  arm-asymmetric-support-v3-v3.6-rc1 rcu-hotplug-v1 config-fragments