Delay the result of the readyState check to give scripts the opportunity to...

Delay the result of the readyState check to give scripts the opportunity to delay ready, as described by @jrburke in 747ba7de.

src/core.js

@@ -429,7 +429,8 @@ jQuery.extend({
 		// Catch cases where $(document).ready() is called after the
 		// browser event has already occurred.
 		if ( document.readyState === "complete" ) {
-			return jQuery.ready();
+			// Handle it asynchronously to allow scripts the opportunity to delay ready
+			return setTimeout( jQuery.ready, 13 );
 		}
 
 		// Mozilla, Opera and webkit nightlies currently support this event