Fixed #16776 -- Fixed a regression introduced in r16415 which caused Django's...

Fixed #16776 -- Fixed a regression introduced in r16415 which caused Django's embedded jQuery to overwrite any pre-existing values of `window.jQuery` in the global namespace. Many thanks to Rob Hudson, Jannis Leidel and "anonymous" for the help resolving this issue.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@16967 bcc190cf-cafb-0310-a4f2-bffc1f526a37