Updating FSF Address.

Change-Id: Ic6895b89e8798a3636333dd50a8540eae643719a
Signed-off-by: Dean Glazeski <dnglaze@gmail.com>
Reviewed-on: http://openocd.zylin.com/274
Tested-by: jenkins
Reviewed-by: Øyvind Harboe <oyvindharboe@gmail.com>

COPYING

@@ -2,7 +2,7 @@
 		       Version 2, June 1991
 
  Copyright (C) 1989, 1991 Free Software Foundation, Inc.
-                       59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+                       51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
  Everyone is permitted to copy and distribute verbatim copies
  of this license document, but changing it is not allowed.