Add copywrite info

Add debian packageing files
Allow ignoreing of WM_CLIENT_MACHINE

process.cpp

@@ -1,3 +1,22 @@
+/**
+ * Sigstoped
+ * Copyright (C) 2020 Carl Klemm
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 3 as published by the Free Software Foundation.
+ *
+ * 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 <iostream>
 #include <fstream>
 #include <filesystem>