add gpl header

smmapdfw/verify_worker/verify_worker.c

@@ -1,3 +1,23 @@
+/*
+    Copyright (C) 2004, Wolfgang Hottgenroth
+
+    This file is part of smmapdfw.
+
+    smmapdfw is free software; you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.  
+
+    smmapdfw 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 General Public
+    License for more details. 
+
+    You should have received a copy of the GNU General Public License
+    along with smmapdfw. If not, write to the Free Software Foundation, 59
+    Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+*/
+
 #if HAVE_CONFIG_H
 # include "config.h"
 #endif