Added Simple I/O (SIO) scheduler.

Conflicts:
	block/Makefile
	include/linux/elevator.h
Update SIO Scheduler v0.2
Update SIO Scheduler v0.3
Update SIO Scheduler v0.3 - Cleaning
slub.c: Remove PAGE_ALLOC_COSTLY_ORDER - +3% boost
cgroups: timer_slack: forward port timer_slack to 3.4. http://lwn.net/Articles/431847/

Signed-off-by: Francisco Franco <franciscofranco.1990@gmail.com>
mako_hotplug/load_stats: remove unused code from the load_stats driver. Queue the delayed work every 0,5s and not every 0,1s.

Signed-off-by: Francisco Franco <franciscofranco.1990@gmail.com>
Merge remote-tracking branch 'franco/nightlies' into nightlies