Make the xunit reporter follow the established pattern of using the v…

…ows console module and allowing for overriding the stream.

lib/vows/reporters/xunit.js

@@ -4,7 +4,9 @@
 // added, see: http://ant.1045680.n5.nabble.com/schema-for-junit-xml-output-td1375274.html
 //
 
-var puts = require('util').puts;
+var options = { tail: '\n', raw: true };
+var console = require('../../vows/console');
+var puts = console.puts(options);
 
 var buffer       = [],
     curSubject   = null;
@@ -47,6 +49,9 @@ function cdata(data) {
 }
 
 this.name = 'xunit';
+this.setStream = function (s) {
+  options.stream = s;
+};
 this.report = function (data) {
     var event = data[1];