add cfx utils

 Changes to be committed:
	new file:   core/java/org/codefirex/utils/ActionHandler.java
	new file:   core/java/org/codefirex/utils/CFXConstants.java
	new file:   core/java/org/codefirex/utils/CFXUtils.java
	modified:   services/java/com/android/server/power/ShutdownThread.java