code: function XTemplateRuntime(fn, config) {
    var self = this;
    self.fn = fn;
    self.config = util.merge(XTemplateRuntime.globalConfig, config);
    this.subNameResolveCache = {};
  }
docs: template file name for chrome debug
  
  @cfg {Boolean} name
  @member XTemplate.Runtime
   
  XTemplate runtime. only accept tpl as function.
  @class XTemplate.Runtime