Changing extent structure back to single array: [minX, minY, maxX, maxY]

This means we'll have to have a new structure and new methods for 3D envelopes.

src/ol/parser/ogc/gmlparser_v2.js

@@ -2,7 +2,6 @@ goog.provide('ol.parser.ogc.GML_v2');
 
 goog.require('goog.array');
 goog.require('goog.object');
-goog.require('ol.extent');
 goog.require('ol.parser.ogc.GML');
 
 
@@ -36,7 +35,10 @@ ol.parser.ogc.GML_v2 = function(opt_options) {
           [node, coordinates, container]);
       this.readChildNodes(node, coordinates);
       container.projection = node.getAttribute('srsName');
-      container.bounds = ol.extent.clone(coordinates[0]);
+      container.bounds = [
+        coordinates[0][0][0], coordinates[0][0][1],
+        coordinates[0][1][0], coordinates[0][1][1]
+      ];
     }
   });
   goog.object.extend(this.writers['http://www.opengis.net/gml'], {
@@ -104,7 +106,11 @@ ol.parser.ogc.GML_v2 = function(opt_options) {
     },
     'Box': function(extent) {
       var node = this.createElementNS('gml:Box');
-      this.writeNode('coordinates', extent, null, node);
+      var coordinates = [
+        [extent[0], extent[1]],
+        [extent[2], extent[3]]
+      ];
+      this.writeNode('coordinates', coordinates, null, node);
       // srsName attribute is optional for gml:Box
       if (goog.isDefAndNotNull(this.srsName)) {
         node.setAttribute('srsName', this.srsName);