Stm sync
Merge branch 'statemachine' of https://github.com/metaborg/metac into statemachine

Conflicts:
	Statemachine/syntax/Statemachine.tmpl
back-up
- Statemachine Namebinding
- Statemachine tests
- syntax for using statemachines
Merge branch 'statemachine' of https://github.com/metaborg/metac into statemachine

Conflicts:
	Statemachine/syntax/Statemachine-in-Base.tmpl
	Statemachine/syntax/Statemachine.tmpl
	test/Statemachine/ex.mc