Extend toolbox with SE Android support.

Add -Z option to ls and ps for displaying security contexts.
Modify id to display security context.
Add new SELinux commands: chcon, getenforce, getsebool, load_policy, restorecon, runcon, setenforce, setsebool.

Change-Id: Ia20941be4a6cd706fe392fed6e38a37d880ec5f1
12 files changed