FLUID-4886: Updating to latest version of qunit trunk in order to resolve cross-context "equiv" issues in GPII/node - we now use the new qunit "propEqual" method for comparing deep equality as more in keeping with our framework-wide opinions on state-equivalence - see https://github.com/jquery/qunit/issues/279 for discussion on this. Updates to fluid.js node driver to fix error with global namespace pollution as well as exposing globally useful method fluid.loadInContext for loading non-require-aware framework-style files. We also improve the fidelity of the node context object by adding setTimeout and a self-linking "window" property.