fix almost all warnings
- Makefile: solved dependency problem when compiling include lusi- Renamed type declarations as lustre_types and machine_code_types
[lustresf] work in progress. Added global env with initial values
[lustresf] add Program constructor in model examples + sf_sem
lustresf: Better construction of lustre ast. Still more work to be done.
Moved stateflow tool in src/toolUpdated the makefile to compile lustresfNot working yet