Also, add automatic unit tests for any_of, all_of and none_of. This commit
also makes it easier to add new automatic unit tests by documenting a small
shell script.
Commit triggered by http://stackoverflow.com/q/42012512/627587
- Rename test/_support to test/_include
- Move stuff from test/_include/test to test/_include/support
- Move stuff in test/_include/support into global namespace