Update wp-tinymce.js.gz.

 * Plugins are now sorted alphabetically during concatenation, to ensure consistent generation.
 * Key tinymce/wp-tinymce.js.gz off the revision number, rather than the date.
see #19592.


git-svn-id: https://core.svn.wordpress.org/trunk@19953 1a063a9b-81f0-0310-95a4-ce76da25c4cd