All demos should use the same jquery loader as all tests do. This also allows us to test the demos against multiple jQuery library releases using the same URL query parameter mechanism (uri?jquery=<file>) as used by the tests.
- remove non-existent file 'tabs/tabs_deprecated.html' from the test set 'all' - it had been removed in a previous commit already.

- fix URIs pointing at the jquery.js loader code.

- updated qUnit to the bleeding edge
Merge branch 'master' into AMD