* Add copyright notices to all files which don't have one.

* docs/license.txt: Renamed to...
* docs/LICENSE.TXT: This.
* docs/FTL.txt: Renamed to...
* docs/FTL.TXT: This.
* docs/GPL.txt: Renamed to...
* docs/GPL.TXT: This.

* docs/PATENTS: Slightly reworded.  Suggested by Sylvain Beucler
<beuc@gnu.org>.
diff --git a/docs/DEBUG b/docs/DEBUG
index b864d57..4e13233 100644
--- a/docs/DEBUG
+++ b/docs/DEBUG
@@ -179,5 +179,16 @@
     If it is  undefined, or if its value is  not strictly positive, then
     no allocation bounsd are checked at runtime.
 
+------------------------------------------------------------------------
+
+Copyright 2002, 2003, 2004 by
+David Turner, Robert Wilhelm, and Werner Lemberg.
+
+This  file  is  part  of the  FreeType  project, and may  only be  used,
+modified,  and  distributed  under  the  terms of  the FreeType  project
+license, LICENSE.TXT.   By continuing to use, modify, or distribute this
+file you  indicate that  you have  read the  license and understand  and
+accept it fully.
+
 
 --- end of DEBUG ---