Merge 1.0.0 changes back to master.

guacamole-ext/src/main/java/org/apache/guacamole/net/auth/simple/SimpleDirectory.java

@@ -85,6 +85,7 @@ public class SimpleDirectory<ObjectType extends Identifiable>
      * @param objects
      *     The objects that should be present in this directory.
      */
+    @SafeVarargs
     public SimpleDirectory(ObjectType... objects) {
         this(Arrays.asList(objects));
     }