Test for CVS plugin

[Kuba Ober]

> Well, that define adds the test targets to the default targets which is
> different from what I want (and probably others as a google search
> showed). I don't want to always build+relink the tests on each
> invocation of make in a certain subdir, I'd like to build the tests once
> the code they test compiles and run the tests after that. Thats what
> make test should do IMHO.

Second that.

Cheers, Kuba