Configure everything using CMake and run 'ctest -D Experimental'
inside the build directory. If you want to participate in the nightly
testing, add
#!/bin/sh
cd $BUILD_DIR
exec ctest -D Nightly
to /etc/cron.daily/opm-core. The results can then be browsed at
<http://opm-project.org/CDash/index.php?project=opm-core>