vbox: Fix copyright mistake

I made a mistake on copyright in patch 7f0f415b.

If I copied codes from one file to another, I should copy the
copyright announcement as well. So this patch makes up the
copyright which I should have added in the previous patch.

src/vbox/vbox_common.c

 /*
- * Copyright 2014, Taowei Luo (uaedante@gmail.com)
+ * Copyright (C) 2014, Taowei Luo (uaedante@gmail.com)
+ * Copyright (C) 2010-2014 Red Hat, Inc.
+ * Copyright (C) 2008-2009 Sun Microsystems, Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public

src/vbox/vbox_common.h

 /*
- * Copyright 2014, Taowei Luo (uaedante@gmail.com)
+ * Copyright (C) 2014, Taowei Luo (uaedante@gmail.com)
+ * Copyright (C) 2008-2009 Sun Microsystems, Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public

src/vbox/vbox_get_driver.h

 /*
- * Copyright 2014, Taowei Luo (uaedante@gmail.com)
+ * Copyright (C) 2014, Taowei Luo (uaedante@gmail.com)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public

src/vbox/vbox_uniformed_api.h

 /*
- * Copyright 2014, Taowei Luo (uaedante@gmail.com)
+ * Copyright (C) 2014, Taowei Luo (uaedante@gmail.com)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public