History:
1.6.10: 06/02/14 O. Sallou - Bug fix in search with substitutions
1.6.9: 20/11/13 O. Sallou - Add windows support for swi-prolog
                          - fixes on view with begin constraint
1.6.8: 05/11/13 O. Sallou - Add windows support (external and custom cost functions not available)
                          - Upgrade Sicstus support to v4.2
1.6.7: 31/10/13 O. Sallou Bug on multiple model chaining
1.6.6: 30/10/13 O. Sallou Bug on morphisms and documentation
1.6.4: 11/10/13 O. Sallou Bug 2243, Bug 2244
1.6.3: 04/10/13 O. Sallou - Add comments in grammar
                - Fixes in overlap and distance search
1.6.2: 24/05/13 O. Sallou - Fix overlap+range usage in repeats
1.6.1: 13/03/13 O. Sallou - Show number of match per input seq in stdout
1.6.0: 15/02/13 O. Sallou - Various bug fixes and stability updates
1.5.0: 21/06/12 O. Sallou - Public release
