More singleton marking.

git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@5160 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/admin/server/DatabaseConfigRegistry.java

@@ -23,6 +23,8 @@ package com.threerings.admin.server;
 
 import java.util.HashMap;
 
+import com.google.inject.Singleton;
+
 import com.samskivert.io.PersistenceException;
 import com.samskivert.jdbc.WriteOnlyUnit;
 import com.samskivert.jdbc.depot.PersistenceContext;
@@ -42,6 +44,7 @@ import static com.threerings.admin.Log.log;
  * data from the database. This ensures that systems initialized after the config registry can
  * safely make use of configuration information.
  */
+@Singleton
 public class DatabaseConfigRegistry extends ConfigRegistry
 {
     /**

src/java/com/threerings/admin/server/PeeredDatabaseConfigRegistry.java

@@ -23,6 +23,8 @@ package com.threerings.admin.server;
 
 import java.util.ArrayList;
 
+import com.google.inject.Singleton;
+
 import com.samskivert.io.PersistenceException;
 import com.samskivert.jdbc.depot.PersistenceContext;
 import com.samskivert.util.Invoker;
@@ -41,6 +43,7 @@ import static com.threerings.admin.Log.log;
  * A database backed config registry that registers with the peer system and synchronizes with its
  * peers when configuration fields are changed.
  */
+@Singleton
 public class PeeredDatabaseConfigRegistry extends DatabaseConfigRegistry
 {
     public PeeredDatabaseConfigRegistry (PersistenceContext ctx, Invoker invoker,

src/java/com/threerings/admin/server/PrefsConfigRegistry.java

@@ -21,13 +21,17 @@
 
 package com.threerings.admin.server;
 
+import com.google.inject.Singleton;
+
 import com.samskivert.util.PrefsConfig;
+
 import com.threerings.presents.dobj.DObject;
 
 /**
  * Implements the {@link ConfigRegistry} using the Java preferences system as a persistent store
  * for the configuration information (see {@link Config} for more information on how that works).
  */
+@Singleton
 public class PrefsConfigRegistry extends ConfigRegistry
 {
     @Override // from ConfigRegistry