Update imports to android-common

Several files were moved to android-common. Update all the references
to import those files from the new location.
diff --git a/services/java/com/android/server/PackageManagerService.java b/services/java/com/android/server/PackageManagerService.java
index 3320a53..232c6d1 100644
--- a/services/java/com/android/server/PackageManagerService.java
+++ b/services/java/com/android/server/PackageManagerService.java
@@ -17,8 +17,8 @@
 package com.android.server;
 
 import com.android.internal.app.ResolverActivity;
-import com.android.internal.util.FastXmlSerializer;
-import com.android.internal.util.XmlUtils;
+import com.android.common.FastXmlSerializer;
+import com.android.common.XmlUtils;
 
 import org.xmlpull.v1.XmlPullParser;
 import org.xmlpull.v1.XmlPullParserException;