libtiff: Replace BSD advertising clause

Replace strtoull.c from libtiff with version in qtbase that has
an updated license without advertising clause.

Change-Id: I3ffdb8799adc6ef18c60021d2d2fe222df1c2acd
Reviewed-by: Lars Knoll <lars.knoll@qt.io>

src/3rdparty/libtiff/port/strtoull.c

@@ -2,6 +2,11 @@
  * Copyright (c) 1992, 1993
  *	The Regents of the University of California.  All rights reserved.
  *
+ * Copyright (c) 2011 The FreeBSD Foundation
+ * All rights reserved.
+ * Portions of this software were developed by David Chisnall
+ * under sponsorship from the FreeBSD Foundation.
+ *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
@@ -10,11 +15,7 @@
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *	This product includes software developed by the University of
- *	California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
+ * 3. Neither the name of the University nor the names of its contributors
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
  *