Create "Marker" layer. Add appropriate tests.

git-svn-id: http://svn.openlayers.org/trunk/openlayers@100 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Layer/Marker.js

@@ -0,0 +1,16 @@
+OpenLayers.Layer.Marker = Class.create();
+OpenLayers.Layer.Marker.prototype = 
+  Object.extend( new OpenLayers.Layer(), {
+    
+    // markers: store internal marker list
+    markers:null,
+    
+    initialize: function(name) {
+        OpenLayers.Layer.prototype.initialize.apply(this, arguments);
+    },
+    
+    // Implement this. It may not need to do anything usually.
+    moveTo:function(bounds,zoomChanged) {
+    
+    }
+});