NFC Polling Mode (3/3)

Change-Id: I41c76e6f23642af3daf356daf3788387b396594f
SlimPIE: Configurable sensitivity [1/2]
Signed-off-by: Lokesh Chamane <lokesh.c703@gmail.com>

Conflicts:
	core/java/android/provider/Settings.java

Change-Id: Ia6ebe8ab40b677b268170a7006de5fc7c79988b8