cfs autogrouping: backported from Linux 3.0

Signed-off-by: Blechd0se <alex.christ@hotmail.de>

Conflicts:
	arch/arm/configs/mb526_cm10_defconfig
	kernel/sched.c
	kernel/sysctl.c

Change-Id: I3da247b39e6956c5e674c065bc7d380091b22c89
Merge branch 'jb_clean-2.6.32-9' of git://github.com/Quarx2k/jordan-kernel into jb_clean-2.6.32-9