- changed Doom source license to GPL in all subdirectories and fixed missing licenses in a few other files.

src/p_enemy.cpp

@@ -1,20 +1,25 @@
-// Emacs style mode select	 -*- C++ -*- 
 //-----------------------------------------------------------------------------
 //
-// $Id:$
+// Copyright 1993-1996 id Software
+// Copyright 1994-1996 Raven Software
+// Copyright 1998-1998 Chi Hoang, Lee Killough, Jim Flynn, Rand Phares, Ty Halderman
+// Copyright 1999-2016 Randy Heit
+// Copyright 2002-2016 Christoph Oelckers
 //
-// Copyright (C) 1993-1996 by id Software, Inc.
+// 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 3 of the License, or
+// (at your option) any later version.
 //
-// This source is available for distribution and/or modification
-// only under the terms of the DOOM Source Code License as
-// published by id Software. All rights reserved.
-//
-// The source is distributed in the hope that it will be useful,
+// This program is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
-// FITNESS FOR A PARTICULAR PURPOSE. See the DOOM Source Code License
-// for more details.
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
 //
-// $Log:$
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see http://www.gnu.org/licenses/
+//
+//-----------------------------------------------------------------------------
 //
 // DESCRIPTION:
 //		Enemy thinking, AI.