add cpu, gpu, and high performance sound settings options.

yanked from Crossbones! thanks

 On branch jb422
 Changes to be committed:
	modified:   AndroidManifest.xml
	new file:   res/drawable-hdpi/ic_settings_cpu.png
	new file:   res/drawable-mdpi/ic_settings_cpu.png
	new file:   res/drawable-xhdpi/ic_settings_cpu.png
	modified:   res/values/arrays.xml
	modified:   res/values/config.xml
	modified:   res/values/strings.xml
	new file:   res/xml/cpu_settings.xml
	modified:   res/xml/display_settings.xml
	modified:   res/xml/settings_headers.xml
	modified:   res/xml/sound_settings.xml
	new file:   src/com/android/settings/BootCompleteReceiver.java
	new file:   src/com/android/settings/CPUSettings.java
	modified:   src/com/android/settings/DeviceInfoSettings.java
	modified:   src/com/android/settings/DisplaySettings.java
	new file:   src/com/android/settings/KernelUtils.java
	new file:   src/com/android/settings/OnBootCompleted.java
	modified:   src/com/android/settings/SoundSettings.java

Change-Id: I3a9c0e5958f894062037a07d456a4ce586315c9a