Update copyrights for completeness.

Author: graydon

LICENSE.txt

@@ -82,7 +82,7 @@ The following third party packages are included:
     This file is part of Valgrind, a dynamic binary instrumentation
     framework.
 
-    Copyright (C) 2000-2008 Julian Seward.  All rights reserved.
+    Copyright (C) 2000-2010 Julian Seward.  All rights reserved.
 
     Redistribution and use in source and binary forms, with or without
     modification, are permitted provided that the following conditions
@@ -120,7 +120,7 @@ The following third party packages are included:
     This file is part of MemCheck, a heavyweight Valgrind tool for
     detecting memory errors.
 
-    Copyright (C) 2000-2009 Julian Seward.  All rights reserved.
+    Copyright (C) 2000-2010 Julian Seward.  All rights reserved.
 
     Redistribution and use in source and binary forms, with or without
     modification, are permitted provided that the following conditions
@@ -157,8 +157,8 @@ The following third party packages are included:
 The remaining code and documentation in the collective work presented here, as
 well as the collective work itslf, is distributed under the following terms:
 
-    Copyright (c) 2006-2010 Graydon Hoare
-    Copyright (c) 2009-2010 Mozilla Foundation
+    Copyright (c) 2006-2011 Graydon Hoare
+    Copyright (c) 2009-2011 Mozilla Foundation
 
     Permission is hereby granted, free of charge, to any person obtaining a
     copy of this software and associated documentation files (the "Software"),