Handle android.settings.HOME_SETTINGS intent

Launch the Home picker activity for the new public intent.

Bug: 16303152
Change-Id: I91cfffdec6c8ed13d3b0e57d7903b4a06dcbb6e6

src/com/android/settings/Settings.java

@@ -40,6 +40,7 @@ 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 HomeSettingsActivity extends SettingsActivity { /* empty */ }
     public static class DisplaySettingsActivity extends SettingsActivity { /* empty */ }
     public static class DeviceInfoSettingsActivity extends SettingsActivity { /* empty */ }
     public static class ApplicationSettingsActivity extends SettingsActivity { /* empty */ }

src/com/android/settings/SettingsActivity.java

@@ -239,6 +239,7 @@ public class SettingsActivity extends Activity
             SpellCheckersSettings.class.getName(),
             UserDictionaryList.class.getName(),
             UserDictionarySettings.class.getName(),
+            HomeSettings.class.getName(),
             DisplaySettings.class.getName(),
             DeviceInfoSettings.class.getName(),
             ManageApplications.class.getName(),