add reboot binary

Change-Id: Ie059daae4cc0525ab67c9c774a1a106a8e50a0b3
1018

Change-Id: Ie521f8b526892434b8cca4b72a12e5701e3d0e52
Merge branch 'cm-10.1' of git://github.com/CyanogenMod/Superuser