Allow plugins to delay the exeuction of the ready event. Delay the ready event...

Allow plugins to delay the exeuction of the ready event. Delay the ready event by calling: jQuery.readyWait++ and force the event to fire by doing: jQuery.ready(true). Fixes #6781.

src/core.js

@@ -361,10 +361,19 @@ jQuery.extend({
 	// Is the DOM ready to be used? Set to true once it occurs.
 	isReady: false,
 
+	// A counter to track how many items to wait for before
+	// the ready event fires. See #6781
+	readyWait: 1,
+	
 	// Handle when the DOM is ready
-	ready: function() {
+	ready: function( wait ) {
+		// A third-party is pushing the ready event forwards
+		if ( wait === true ) {
+			jQuery.readyWait--;
+		}
+
 		// Make sure that the DOM is not already loaded
-		if ( !jQuery.isReady ) {
+		if ( !jQuery.readyWait && !jQuery.isReady ) {
 			// Make sure body exists, at least, in case IE gets a little overzealous (ticket #5443).
 			if ( !document.body ) {
 				return setTimeout( jQuery.ready, 13 );
@@ -373,6 +382,11 @@ jQuery.extend({
 			// Remember that the DOM is ready
 			jQuery.isReady = true;
 
+			// If a normal DOM Ready event fired, decrement, and wait if need be
+			if ( wait !== true && --jQuery.readyWait > 0 ) {
+				return;
+			}
+
 			// If there are functions bound, to execute
 			if ( readyList ) {
 				// Execute all of them