Making it so moveTo is only called once when creating a map with center and layers options. r=crschmidt (closes #3114)

git-svn-id: http://svn.openlayers.org/trunk/openlayers@11480 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Map.js

@@ -600,6 +600,14 @@ OpenLayers.Map = OpenLayers.Class({
         
         // add any initial layers
         if (options && options.layers) {
+            /** 
+             * If you have set options.center, the map center property will be
+             * set at this point.  However, since setCenter has not been caleld,
+             * addLayers gets confused.  So we delete the map center in this 
+             * case.  Because the check below uses options.center, it will
+             * be properly set below.
+             */
+            delete this.center;
             this.addLayers(options.layers);        
             // set center (and optionally zoom)
             if (options.center) {