Revert data.js rewrite.

Reverts the following commits:

commit f717226b3a44f918eec30b2d59ab257270189bc3
Author: Rick Waldron <waldron.rick@gmail.com>
Date:   Mon Dec 31 18:06:38 2012 -0500

Only splice from internal arrays when item actually exists.

commit b9cdc4136b688963d1dc4befb169be02a0216ba9
Author: Rick Waldron <waldron.rick@gmail.com>
Date:   Mon Dec 31 16:20:35 2012 -0500

Updates to data.js re-write to pass events and manipulation

commit d1de3000c6d50c298de14fb1ae3381d75c303723
Author: Rick Waldron <waldron.rick@gmail.com>
Date:   Mon Dec 31 15:09:45 2012 -0500

2.0: Rewrite data.js

1 files changed, 28 insertions, 32 deletions

diff --git a/src/manipulation.js b/src/manipulation.js
index a121ccbc7..9aea16f9d 100644
--- a/src/manipulation.js
+++ b/src/manipulation.js
@@ -327,7 +327,7 @@ jQuery.fn.extend({
 					for ( i = 0; i < hasScripts; i++ ) {
 						node = scripts[ i ];
 						if ( rscriptType.test( node.type || "" ) &&
-							!data_priv.access( node, "globalEval" ) && jQuery.contains( doc, node ) ) {
+							!jQuery._data( node, "globalEval" ) && jQuery.contains( doc, node ) ) {
 
 							if ( node.src ) {
 								// Hope ajax is available...
@@ -514,16 +514,20 @@ jQuery.extend({
 	},
 
 	cleanData: function( elems, /* internal */ acceptData ) {
-		var data, elem, type,
+		var id, data, elem, type,
 			l = elems.length,
 			i = 0,
+			internalKey = jQuery.expando,
+			cache = jQuery.cache,
 			special = jQuery.event.special;
 
 		for ( ; i < l; i++ ) {
 			elem = elems[ i ];
 
 			if ( acceptData || jQuery.acceptData( elem ) ) {
-				data = data_priv.access( elem );
+
+				id = elem[ internalKey ];
+				data = id && cache[ id ];
 
 				if ( data ) {
 					for ( type in data.events ) {
@@ -535,12 +539,14 @@ jQuery.extend({
 							jQuery.removeEvent( elem, type, data.handle );
 						}
 					}
+
+					// Remove cache only if it was not already removed by jQuery.event.remove
+					if ( cache[ id ] ) {
+						delete cache[ id ];
+						delete elem[ internalKey ];
+					}
 				}
 			}
-
-			// Discard any remaining `private` and `user` data
-			// (Splices the data objects out of the internal cache arrays)
-			data_discard( elem );
 		}
 	}
 });
@@ -574,45 +580,35 @@ function setGlobalEval( elems, refElements ) {
 		i = 0;
 
 	for ( ; i < l; i++ ) {
-		data_priv.set(
-			elems[ i ], "globalEval", !refElements || data_priv.get( refElements[ i ], "globalEval" )
-		);
+		jQuery._data( elems[ i ], "globalEval", !refElements || jQuery._data( refElements[ i ], "globalEval" ) );
 	}
 }
 
 function cloneCopyEvent( src, dest ) {
-	var i, l, type, pOld, pCur, uOld, uCur, events;
 
-	if ( dest.nodeType !== 1 ) {
+	if ( dest.nodeType !== 1 || !jQuery.hasData( src ) ) {
 		return;
 	}
 
-	// 1. Copy private data: events, handlers, etc.
-	if ( data_priv.hasData( src ) ) {
-		pOld = data_priv.access( src );
-		pCur = jQuery.extend( {}, pOld );
-		events = pOld.events;
+	var i, l, type,
+		oldData = jQuery._data( src ),
+		curData = jQuery._data( dest, oldData ),
+		events = oldData.events;
 
-		data_priv.set( dest, pCur );
+	if ( events ) {
+		delete curData.handle;
+		curData.events = {};
 
-		if ( events ) {
-			delete pCur.handle;
-			pCur.events = {};
-
-			for ( type in events ) {
-				for ( i = 0, l = events[ type ].length; i < l; i++ ) {
-					jQuery.event.add( dest, type, events[ type ][ i ] );
-				}
+		for ( type in events ) {
+			for ( i = 0, l = events[ type ].length; i < l; i++ ) {
+				jQuery.event.add( dest, type, events[ type ][ i ] );
 			}
 		}
 	}
 
-	// 2. Copy user data
-	if ( data_user.hasData( src ) ) {
-		uOld = data_user.access( src );
-		uCur = jQuery.extend( {}, uOld );
-
-		data_user.set( dest, uCur );
+	// make the cloned public data object a copy from the original
+	if ( curData.data ) {
+		curData.data = jQuery.extend( {}, curData.data );
 	}
 }