Port UKSM 0.1.2

Signed-off-by: Derek Cannata <thederekjay@gmail.com>

Conflicts:
	fs/exec.c
	include/linux/mmzone.h
	mm/vmstat.c

Change-Id: Id50565d0d78592c59708a29d3131bd293ce7a6c2
UKSM: Upgrade to 0.1.2.2

Signed-off-by: Derek Cannata <thederekjay@gmail.com>
mm: optimize Kernel Samepage Merging(KSM)

Signed-off-by: Derek Cannata <thederekjay@gmail.com>