Restore interruptible status when exiting a scope
Restore interruptible status when exiting a scope

	* src/runner/runner.cc (operator() (const ast::Scope&)): If a
	scope is marked interruptible during the course of its
	execution, restore its state at exit.

urbiforge/urbi,urbiforge/urbi,aldebaran/urbi,aldebaran/urbi,urbiforge/urbi,aldebaran/urbi,urbiforge/urbi,aldebaran/urbi,urbiforge/urbi,urbiforge/urbi,urbiforge/urbi,aldebaran/urbi,urbiforge/urbi,urbiforge/urbi,aldebaran/urbi,aldebaran/urbi,aldebaran/urbi