Add debug field to thread_manager and tried to fix sc_join (not worked :-( )

src/main.rs

@@ -42,7 +42,7 @@ fn main() {
     let mut machine = Machine::new(args.debug);
     let (loader, ptr) = loader::Loader::new(args.executable.as_str(), &mut machine, 0).expect("An error occured while parsing the program");
     
-    let mut system = System::default();
+    let mut system = System::new(args.debug);
 
     let thread_exec = Thread::new(args.executable.as_str());
     let thread_exec = Rc::new(RefCell::new(thread_exec));