Tests are no longer build when running ctest / make test.
They have to be explicitly built within the test folder
using "make all".
This fixes FS#263.
(reviewed by timok)


git-svn-id: svn://svn.iws.uni-stuttgart.de/DUMUX/dumux/trunk@14622 2fb0f335-1f38-0410-981e-8018bf24f1b0