Don't include the non-minified tinymce.js in /build. Load it when running from /src, else load wp-tinymce.js.gz (production) or tinymce.min.js (SCRIPT_DEBUG). Props nacin, fixes #27739

git-svn-id: https://develop.svn.wordpress.org/trunk@28081 602fd350-edb4-49c9-b593-d223f7449a82