AMD-ify jQuery sourcegit s! Woo! Fixes #14113, #14163.

Conflicts:
	Gruntfile.js
	README.md
	src/ajax.js
	src/ajax/xhr.js
	src/attributes.js
	src/core.js
	src/css.js
	src/data.js
	src/effects.js
	src/event.js
	src/manipulation.js
	src/offset.js
	src/selector-native.js
	src/traversing.js
	test/unit/core.js
	test/unit/data.js

src/css/var/cssExpand.js

@@ -0,0 +1,3 @@
+define(function() {
+	return [ "Top", "Right", "Bottom", "Left" ];
+});

src/css/var/isHidden.js

@@ -0,0 +1,13 @@
+define([
+	"../../core",
+	"../../selector"
+	// css is assumed
+], function( jQuery ) {
+
+	return function( elem, el ) {
+		// isHidden might be called from jQuery#filter function;
+		// in that case, element will be second argument
+		elem = el || elem;
+		return jQuery.css( elem, "display" ) === "none" || !jQuery.contains( elem.ownerDocument, elem );
+	};
+});