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

tests/test_Util.html

@@ -181,6 +181,7 @@
                      }
 
         t.eq( OpenLayers.Util.getParameterString(params), "foo=bar&chicken=1.5", "getParameterString returns correctly");    
+        t.eq( OpenLayers.Util.getParameterString({'a:':'b='}), "a%3A=b%3D", "getParameterString returns correctly with non-ascii keys/values");    
     }
 
     function test_08_Util_createAlphaImageDiv(t) {