Search results - just show the first item of ListPreference entries

- need to increment the database model version to force re-indexing
- change entries separator from SPACE to PIPE
- just show the first entries value in the Search results

Change-Id: I747218ff3528c3231c0209f8870c12f65e036070

src/com/android/settings/search/IndexDatabaseHelper.java

@@ -28,7 +28,7 @@ public class IndexDatabaseHelper extends SQLiteOpenHelper {
     private static final String TAG = "IndexDatabaseHelper";
 
     private static final String DATABASE_NAME = "search_index.db";
-    private static final int DATABASE_VERSION = 108;
+    private static final int DATABASE_VERSION = 109;
 
     public interface Tables {
         public static final String TABLE_PREFS_INDEX = "prefs_index";