stage2 更多的工具库 stage1 修复问题

stage2/sys/exit.spl

@@ -1,7 +1,7 @@
 // Expect retcode = 6
 
 // exit.spl
-// usage: type exit = @import("exit.spl");  exit.ok();
+// usage: type exit = @import("exit.spl"); exit.ok();
 
 #extern(vm) fn vm_exit(code: i32);