Show application's package name in the "App info" screen.

Change-Id: I7dac8ffa0b10abb5ff235750e90a96d801b2f919
Add RAM info.

SlimLP Conflicts:
        res/xml/device_info_settings.xml
        src/com/android/settings/DeviceInfoSettings.java

Change-Id: I0cce559c86321827d6f920d61ad9dfcb34a63b3c

Conflicts:
	res/values/slim_strings.xml
	res/xml/device_info_settings.xml
	src/com/android/settings/DeviceInfoSettings.java