diff --git a/contrib/bzip2/bzlib.c b/contrib/bzip2/bzlib.c
index f365acd68983..ef0791e05638 100644
--- a/contrib/bzip2/bzlib.c
+++ b/contrib/bzip2/bzlib.c
@@ -4,74 +4,29 @@
 /*---                                               bzlib.c ---*/
 /*-------------------------------------------------------------*/
 
-/*--
-  This file is a part of bzip2 and/or libbzip2, a program and
-  library for lossless, block-sorting data compression.
+/* ------------------------------------------------------------------
+   This file is part of bzip2/libbzip2, a program and library for
+   lossless, block-sorting data compression.
 
-  Copyright (C) 1996-2005 Julian R Seward.  All rights reserved.
+   bzip2/libbzip2 version 1.0.4 of 20 December 2006
+   Copyright (C) 1996-2006 Julian Seward <jseward@bzip.org>
 
-  Redistribution and use in source and binary forms, with or without
-  modification, are permitted provided that the following conditions
-  are met:
+   Please read the WARNING, DISCLAIMER and PATENTS sections in the 
+   README file.
 
-  1. Redistributions of source code must retain the above copyright
-     notice, this list of conditions and the following disclaimer.
-
-  2. The origin of this software must not be misrepresented; you must 
-     not claim that you wrote the original software.  If you use this 
-     software in a product, an acknowledgment in the product 
-     documentation would be appreciated but is not required.
-
-  3. Altered source versions must be plainly marked as such, and must
-     not be misrepresented as being the original software.
-
-  4. The name of the author may not be used to endorse or promote 
-     products derived from this software without specific prior written 
-     permission.
-
-  THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
-  OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-  ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
-  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-  DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
-  GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
-  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
-  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-  Julian Seward, Cambridge, UK.
-  jseward@bzip.org
-  bzip2/libbzip2 version 1.0 of 21 March 2000
-
-  This program is based on (at least) the work of:
-     Mike Burrows
-     David Wheeler
-     Peter Fenwick
-     Alistair Moffat
-     Radford Neal
-     Ian H. Witten
-     Robert Sedgewick
-     Jon L. Bentley
-
-  For more information on these sources, see the manual.
---*/
-
-/*--
-   CHANGES
-   ~~~~~~~
-   0.9.0 -- original version.
+   This program is released under the terms of the license contained
+   in the file LICENSE.
+   ------------------------------------------------------------------ */
 
+/* CHANGES
+   0.9.0    -- original version.
    0.9.0a/b -- no changes in this file.
-
-   0.9.0c
-      * made zero-length BZ_FLUSH work correctly in bzCompress().
-      * fixed bzWrite/bzRead to ignore zero-length requests.
-      * fixed bzread to correctly handle read requests after EOF.
-      * wrong parameter order in call to bzDecompressInit in
-        bzBuffToBuffDecompress.  Fixed.
---*/
+   0.9.0c   -- made zero-length BZ_FLUSH work correctly in bzCompress().
+     fixed bzWrite/bzRead to ignore zero-length requests.
+     fixed bzread to correctly handle read requests after EOF.
+     wrong parameter order in call to bzDecompressInit in
+     bzBuffToBuffDecompress.  Fixed.
+*/
 
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD$");
@@ -1402,8 +1357,7 @@ int BZ_API(BZ2_bzBuffToBuffDecompress)
 
 /*---------------------------------------------------*/
 /*--
-   Code contributed by Yoshioka Tsuneo
-   (QWF00133@niftyserve.or.jp/tsuneo-y@is.aist-nara.ac.jp),
+   Code contributed by Yoshioka Tsuneo (tsuneo@rr.iij4u.or.jp)
    to support better zlib compatibility.
    This code is not _officially_ part of libbzip2 (yet);
    I haven't tested it, documented it, or considered the
@@ -1414,7 +1368,7 @@ int BZ_API(BZ2_bzBuffToBuffDecompress)
 
 /*---------------------------------------------------*/
 /*--
-   return version like "0.9.0c".
+   return version like "0.9.5d, 4-Sept-1999".
 --*/
 const char * BZ_API(BZ2_bzlibVersion)(void)
 {
@@ -1567,9 +1521,10 @@ int BZ_API(BZ2_bzflush) (BZFILE *b)
 void BZ_API(BZ2_bzclose) (BZFILE* b)
 {
    int bzerr;
-   FILE *fp = ((bzFile *)b)->handle;
+   FILE *fp;
    
    if (b==NULL) {return;}
+   fp = ((bzFile *)b)->handle;
    if(((bzFile*)b)->writing){
       BZ2_bzWriteClose(&bzerr,b,0,NULL,NULL);
       if(bzerr != BZ_OK){
@@ -1588,7 +1543,7 @@ void BZ_API(BZ2_bzclose) (BZFILE* b)
 /*--
    return last error code 
 --*/
-static char *bzerrorstrings[] = {
+static const char *bzerrorstrings[] = {
        "OK"
       ,"SEQUENCE_ERROR"
       ,"PARAM_ERROR"