Clarify copyright notice

COPYING

+HarfBuzz is licensed under the so-called "Old MIT" license.  Details follow.
+
+Copyright (C) 2010  Google, Inc.
+Copyright (C) 2006  Behdad Esfahbod
+Copyright (C) 2009  Keith Stribley <devel@thanlwinsoft.org>
+Copyright (C) 2009  Martin Hosken and SIL International
+Copyright (C) 2007  Chris Wilson
+Copyright (C) 2004,2007,2008,2009,2010  Red Hat, Inc.
+Copyright (C) 1998-2004  David Turner and Werner Lemberg
+For full copyright notices consult the individual files in the package.
+
+
 Permission is hereby granted, without written agreement and without
 license or royalty fees, to use, copy, modify, and distribute this
 software and its documentation for any purpose, provided that the

README

 This is HarfBuzz, a text shaping library.
 
 Bug reports on these files should be sent to the HarfBuzz mailing list as
-listed on http://freedesktop.org/wiki/Software/harfbuzz
+listed on http://harfbuzz.org/
 
 For license information, see the file COPYING.
 
 Behdad Esfahbod
-May 24, 2009
+18 November 2010

src/hb-graphite.cc

 /*
- * Copyright (C) 2009, Martin Hosken
- * Copyright (C) 2009, SIL International
+ * Copyright (C) 2009  Martin Hosken
+ * Copyright (C) 2009  SIL International
  *
  *  This is part of HarfBuzz, a text shaping library.
  *

src/hb-object-private.h

 /*
- * Copyright (C) 2007 Chris Wilson
+ * Copyright (C) 2007  Chris Wilson
  * Copyright (C) 2009,2010  Red Hat, Inc.
  *
  *  This is part of HarfBuzz, a text shaping library.