tests/core/starpu_worker_exists.c: add copyright

tests/core/starpu_worker_exists.c

@@ -1,3 +1,19 @@
+/* StarPU --- Runtime system for heterogeneous multicore architectures.
+ *
+ * Copyright (C) 2011  Institut National de Recherche en Informatique et Automatique
+ *
+ * StarPU is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 of the License, or (at
+ * your option) any later version.
+ *
+ * StarPU is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * See the GNU Lesser General Public License in COPYING.LGPL for more details.
+ */
+
 #include <starpu.h>
 
 static int can_always_execute(unsigned workerid,
@@ -64,6 +80,6 @@ main(void)
 		return EXIT_FAILURE;
 
 	starpu_shutdown();
-	
+
 	return EXIT_SUCCESS;
 }