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

src/g_shared/a_morph.cpp

@@ -1,3 +1,26 @@
+//-----------------------------------------------------------------------------
+//
+// Copyright 1994-1996 Raven Software
+// Copyright 1999-2016 Randy Heit
+// Copyright 2002-2016 Christoph Oelckers
+// Copyright 2005-2008 Martin Howe
+//
+// 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 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, see http://www.gnu.org/licenses/
+//
+//-----------------------------------------------------------------------------
+//
+
 #include "info.h"
 #include "a_pickups.h"
 #include "gstrings.h"