[CMake] CTest/test target customisation

[Mike Arthur]

I'm having some frustrations with trying to customise CTest's support in 
CMake.

Our testing system does not involve using CDash/Dart but our own continuous 
integration system so as a result I want "make test" to run our tests and 
generate coverage information.

Maybe I'm just being stupid but it seems almost impossible to customise what 
"make test" does or override it with my own version, whilst still having it 
run all the tests I've added with "add_test".

Any ideas?

-- 
Cheers,
Mike Arthur