settings: add SuperUser

Change-Id: Ifa0399a00596d52fe0cc50539f0782c3b1e8a1f5

Conflicts:
	AndroidManifest.xml
	src/com/android/settings/DevelopmentSettings.java
	src/com/android/settings/SettingsActivity.java

	modified:   Android.mk
	modified:   AndroidManifest.xml
	modified:   proguard.flags
	new file:   res/values/slim_arrays.xml
	new file:   res/values/slim_strings.xml
	modified:   res/xml/dashboard_categories.xml
	modified:   res/xml/development_prefs.xml
	modified:   src/com/android/settings/DevelopmentSettings.java
	modified:   src/com/android/settings/SettingsActivity.java