Declare 'proj' and 'projCode' properties, simplify verbose code

git-svn-id: http://svn.openlayers.org/trunk/openlayers@5408 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Projection.js

@@ -11,7 +11,19 @@
  *     then this is just an empty stub.
  */
 OpenLayers.Projection = OpenLayers.Class({
+
+    /**
+     * Property: proj
+     * {Object} Proj4js.Proj instance.
+     */
+    proj: null,
     
+    /**
+     * Property: projCode
+     * {String}
+     */
+    projCode: null,
+
     /**
      * Constructor: OpenLayers.Projection
      * This class offers several methods for interacting with a wrapped 
@@ -75,10 +87,7 @@ OpenLayers.Projection = OpenLayers.Class({
      * {Boolean} The two projections are equivalent.
      */
     equals: function(projection) {
-        if (this.getCode() == projection.getCode()) {
-            return true;
-        }
-        return false;
+        return this.getCode() == projection.getCode();
     },
 
     /* Method: destroy