Don't expose jQuery.deletedIds. Close gh-889.

src/core.js

@@ -36,6 +36,9 @@ var
 	// Used for detecting and trimming whitespace
 	core_rnotwhite = /\S/,
 	core_rspace = /\s+/,
+	
+	// List of deleted data cache ids, so we can reuse them
+	core_deletedIds = [],
 
 	// Make sure we trim BOM and NBSP (here's looking at you, Safari 5.0 and IE)
 	rtrim = /^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g,

src/data.js

@@ -32,7 +32,7 @@ function internalData( elem, name, data, pvt /* Internal Use Only */ ){
 		// Only DOM nodes need a new unique ID for each element since their data
 		// ends up in the global cache
 		if ( isNode ) {
-			elem[ internalKey ] = id = jQuery.deletedIds.pop() || jQuery.guid++;
+			elem[ internalKey ] = id = core_deletedIds.pop() || jQuery.guid++;
 		} else {
 			id = internalKey;
 		}

src/manipulation.js

@@ -829,7 +829,7 @@ jQuery.extend({
 							elem[ internalKey ] = null;
 						}
 
-						jQuery.deletedIds.push( id );
+						core_deletedIds.push( id );
 					}
 				}
 			}