upgrade to 1.0.6

Change-Id: Ib714043f734237edff44dfaa947b72179b7a80ce
diff --git a/huffman.c b/huffman.c
index 87e79e3..2283fdb 100644
--- a/huffman.c
+++ b/huffman.c
@@ -8,8 +8,8 @@
    This file is part of bzip2/libbzip2, a program and library for
    lossless, block-sorting data compression.
 
-   bzip2/libbzip2 version 1.0.5 of 10 December 2007
-   Copyright (C) 1996-2007 Julian Seward <jseward@bzip.org>
+   bzip2/libbzip2 version 1.0.6 of 6 September 2010
+   Copyright (C) 1996-2010 Julian Seward <jseward@bzip.org>
 
    Please read the WARNING, DISCLAIMER and PATENTS sections in the 
    README file.