Add support to set the 'title' property of a control such that it will

be displayed when hovering over the control in a control.panel via its 
panel_div. r=me (Closes #822)


git-svn-id: http://svn.openlayers.org/trunk/openlayers@5910 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

tests/test_Control.html

@@ -21,7 +21,14 @@
         t.ok(control.map === map, "Control.map is set to the map object" );
         t.ok(map.controls[map.controls.length - 1] === control, "map.controls contains control");
     }
-
+    
+    function test_Control_title(t) { 
+        t.plan( 1 ); 
+        var titleText = 'Title test'; 
+        control = new OpenLayers.Control({title:titleText}); 
+        t.eq( control.title, titleText, "control.title set correctly" ); 
+    }
+    
     function test_Control_destroy(t) {
         t.plan(3);