Roll back r760 - this was forcing use of raw images in some cases, not just allowing.

git-svn-id: svn+ssh://src.earth.threerings.net/nenya/trunk@770 ed5b42cb-e716-0410-a449-f6a68f950b19

src/java/com/threerings/resource/NetworkResourceBundle.java

@@ -112,7 +112,7 @@ public class NetworkResourceBundle extends ResourceBundle
         if (in == null) {
             return null;
         }
-        return ResourceManager.loadImage(in, useFastIO);
+        return ResourceManager.loadImage(in, false);
     }
 
     /**