Reboot menu credit @CyanogenMod

Summary: Depends on D202

Test Plan: wait for Settings commit then test and merge

Reviewers: synergy, anders3408, jriordan001, raymanfx, donald.munn

Differential Revision: http://review.codefirex.com/D218

Conflicts:
	core/res/res/values/strings.xml
	core/res/res/values/symbols.xml

 Author:    Randall Rushing <randall.rushing@gmail.com>
 Changes to be committed:
	modified:   core/java/android/provider/Settings.java
	new file:   core/res/res/drawable-hdpi/ic_lock_reboot.png
	new file:   core/res/res/drawable-hdpi/ic_lock_screenshot.png
	new file:   core/res/res/drawable-mdpi/ic_lock_reboot.png
	new file:   core/res/res/drawable-mdpi/ic_lock_screenshot.png
	new file:   core/res/res/drawable-xhdpi/ic_lock_reboot.png
	new file:   core/res/res/drawable-xhdpi/ic_lock_screenshot.png
	new file:   core/res/res/drawable-xxhdpi/ic_lock_reboot.png
	new file:   core/res/res/drawable-xxhdpi/ic_lock_screenshot.png
	modified:   core/res/res/values/arrays.xml
	modified:   core/res/res/values/strings.xml
	modified:   core/res/res/values/symbols.xml
	modified:   policy/src/com/android/internal/policy/impl/GlobalActions.java
	modified:   services/java/com/android/server/power/ShutdownThread.java