Make sure to add ext to the load path.
Make sure to add ext to the load path.

With this, the tests are surely loading the just-built yajl_ext.so file and
thus are meaningful.

brianmario/yajl-ruby,sferik/yajl-ruby,brianmario/yajl-ruby,sferik/yajl-ruby,mrkn/yajl-ruby,sferik/yajl-ruby,brianmario/yajl-ruby,tenderlove/yajl-ruby,tenderlove/yajl-ruby