Settings: Remove sound settings.

- Move the remaining conditional preferences into
  the combined Sound & Notifications screen.
- Refactor the "Other sounds" sub-settings screen to
  provide a home for the new preferences.
- Migrate docking sounds, conditional on config.
- Migrate docking media, conditional on config.
- Migrate emergency tones, conditional on CDMA.
- Move all boilerplate preference <-> setting plumbing into
  a separate helper.
- Since some preferences in Other sounds are now conditional,
  create a special indexer for searching.
- Remove SoundSettings (and xml), create aliases in the manifest
  to avoid breaking shortcuts.

Bug:15279526
Change-Id: I5ae3ecda2f899b1948f7908bd217a799326c2c56

src/com/android/settings/Settings.java

@@ -40,7 +40,6 @@ public class Settings extends SettingsActivity {
     public static class SpellCheckersSettingsActivity extends SettingsActivity { /* empty */ }
     public static class LocalePickerActivity extends SettingsActivity { /* empty */ }
     public static class UserDictionarySettingsActivity extends SettingsActivity { /* empty */ }
-    public static class SoundSettingsActivity extends SettingsActivity { /* empty */ }
     public static class DisplaySettingsActivity extends SettingsActivity { /* empty */ }
     public static class DeviceInfoSettingsActivity extends SettingsActivity { /* empty */ }
     public static class ApplicationSettingsActivity extends SettingsActivity { /* empty */ }
@@ -90,7 +89,7 @@ public class Settings extends SettingsActivity {
     public static class NotificationSettingsActivity extends SettingsActivity { /* empty */ }
     public static class NotificationDisplaySettingsActivity extends SettingsActivity { /* empty */ }
     public static class AppNotificationSettingsActivity extends SettingsActivity { /* empty */ }
-    public static class TouchSoundSettingsActivity extends SettingsActivity { /* empty */ }
+    public static class OtherSoundSettingsActivity extends SettingsActivity { /* empty */ }
 
     public static class TopLevelSettings extends SettingsActivity { /* empty */ }
 }