E3-1684: Allow require to build missing arch even if some have been built
The main change here is to driver.Makefile.
After some discussion, we have elected to remove the tests that allow one to optionally run the require tests with the debug arch in favour of never using the debug arch at all. If a developer needs to run the tests with debug symbols, any individual test can be run with debug symbols by manually modifying the generated wrappers.
Edited by Simon Rose