added license header to sigtest.c

src/pi_tests/sigtest.c

@@ -1,3 +1,23 @@
+/*
+  sigtest - simple little program to verify signal behavior
+  
+   Copyright (C) 2006, 2007 Clark Williams <williams@redhat.com>
+  
+   This program 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.
+
+   This program 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 this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301
+   USA */
+
 #include <stdio.h>
 #include <signal.h>
 #include <time.h>