Update SuperSu and su to latest version

Change-Id: Ic7b423560519158cba830cb8da1bf40b42425908
Switch to open source superuser

Change-Id: I0882b4bb296af041ec5766ff29a605554f13b0a7
squisher: Fix ASCII

Restore K

Change-Id: I82b655371ece423c91f4c3a1f7e97994fdc1089f
Signed-off-by: Gergely Szell (sethyx) <szell@hu.ibm.com>
Merge "Switch to open source superuser" into jb-mr1
Merge remote-tracking branch 'upstream/jb-mr1' into jb-mr1

Conflicts:
	tools/squisher (resolved)