_TemplatedMixin::_rendered flag
dijit and dojo/domReady!
numerous fixes to Calendar examples, but still more work needed

The non-gregorian example isn't working.   Also, the examples need to be changed to stop using the dojo and dojox globals.
dojo/ready --> dojo/domReady! in code examples
dijit/form: dojo/ready --> dojo/domReady! in code examples
many fixes to TabContainer examples
dijit/layout: dojo/ready --> dojo/domReady! in code examples
dijit/tree: dojo/ready --> dojo/domReady! in code examples
purge dojo.require() from dijit doc