Framework: Show advanced reboot menu only if device is unlocked

The advanced reboot menu will only show if the device is unlocked.
Otherwise
the reboot entry will allow the user to simply reboot the phone.

PS2: Reverted changes done to
core/java/android/view/WindowManagerPolicy.java
PS3: Removed tmp file which was created by gedit..
PS4: Only show reboot options if unlocked or not a secure lockscreen

Change-Id: I6f98eca87fa392d2f9aa918f2d3343d1489fa5fd
Signed-off-by: Parthipan Ramesh <parthipan.ramesh@gmail.com>