Configuration files and scripts to perform tests with ctest
- ctest can be run into the test directory or the root
- the script CTestScript.cmake allows ctest to perform the whole
sequence update/configure/build/test and submit the result to
cdash (http://cdash.inria.fr/CDash/index.php?project=Heptagon)
- gen_ctests is used to generate the file test/CTestTestfile.cmake