* Don't pre-load engine before other plug-ins
This was a fix for the post-processing plug-in that's no longer required.
It was also only applied when running from source, so obviously it's not required or we'd have seen it in the builds.
* Run automated tests in parallel
Done during Turbo Testing and Tooling.
* Pass number of processors via ctest command itself
More reliable apparently because it's a CMake variable that doesn't get cached. It shouldn't get cached or set in the CMake script because it's not the same for every computer.
Done during Turbo Testing and Tooling.
