Factorize redundant code pattern.
Merge branch 'master' of https://github.com/ptal/nominal-workbench
Merge branch 'master' of https://github.com/ptal/nominal-workbench
Add the DTD and XML file describing the tests.
Add the testing program. It uses data/test/* files.
Remove old testing program.
Adapt the build system (makefile and ocp files). Use make test to test the program.
Avoid an automatic building with the option -configure.