Stop WFS layer from requesting data when layer is not in range. (Closes #685)

Note that this is not a complete fix, but instead a patch for 2.5: 
after 2.5, this should be changed/removed when map.setCenter() is 
fixed. (See #937)  


git-svn-id: http://svn.openlayers.org/trunk/openlayers@4069 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Layer/WFS.js

@@ -194,7 +194,8 @@ OpenLayers.Layer.WFS = OpenLayers.Class(
         var outOfBounds = (!firstRendering &&
                            !this.tile.bounds.containsBounds(bounds));
 
-        if ( zoomChanged || firstRendering || (!dragging && outOfBounds) ) {
+        if ( (zoomChanged || firstRendering || (!dragging && outOfBounds))
+             && this.inRange) {
             //determine new tile bounds
             var center = bounds.getCenterLonLat();
             var tileWidth = bounds.getWidth() * this.ratio;