Re-arrange android-common so framework no longer links with it.
This is the framework part, moving classes around so the framework
no longer needs to link to android-common. Makes some APIs public,
others that didn't need to be public are private in the framework,
some small things are copied.
diff --git a/services/java/com/android/server/AppWidgetService.java b/services/java/com/android/server/AppWidgetService.java
index 0b466f1..a5b0db9 100644
--- a/services/java/com/android/server/AppWidgetService.java
+++ b/services/java/com/android/server/AppWidgetService.java
@@ -57,7 +57,7 @@
import com.android.internal.appwidget.IAppWidgetService;
import com.android.internal.appwidget.IAppWidgetHost;
-import com.android.common.FastXmlSerializer;
+import com.android.internal.util.FastXmlSerializer;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;