Parameters for URLs should be URI encoded. Add test for params that need

to be URI encoded in test_Util, and add Tim Schaub's patch from #381 to make
test pass.


git-svn-id: http://svn.openlayers.org/trunk/openlayers@1909 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Util.js

@@ -380,7 +380,8 @@ OpenLayers.Util.getParameterString = function(params) {
     for (var key in params) {
         var value = params[key];
         if ((value != null) && (typeof value != 'function')) {
-            paramsArray.push(key + "=" + value);
+            paramsArray.push(encodeURIComponent(key) + "=" +
+                             encodeURIComponent(value));
         }
     }