Clean up directory structure

src/ol/base/coordinate.js

@@ -0,0 +1,24 @@
+goog.provide('ol.Coordinate');
+
+goog.require('goog.math.Coordinate');
+
+
+
+/**
+ * @constructor
+ * @extends {goog.math.Coordinate}
+ * @param {number} x X.
+ * @param {number} y Y.
+ */
+ol.Coordinate = function(x, y) {
+  goog.base(this, x, y);
+};
+goog.inherits(ol.Coordinate, goog.math.Coordinate);
+
+
+/**
+ * @return {ol.Coordinate} Clone.
+ */
+ol.Coordinate.prototype.clone = function() {
+  return new ol.Coordinate(this.x, this.y);
+};