Removed old syscalls

examples/shell/shell.q

@@ -8,14 +8,14 @@ main() {
 
 	loop {
 		io.write("λ ")
-		n := io.in(command)
+		n := io.read(command)
 
 		if n <= 0 {
 			return
 		}
 
 		command[n-1] = 0
-		pid := sys.fork()
+		pid := sys.clone(sig.chld, 0, 0, 0, 0)
 
 		if pid == 0 {
 			sys.execve(command, 0, 0)