Remove pthreads patch, roll in new patches, disable unchecked bit readers.

libavcodec/ituh263dec.c

 /*
  * ITU H263 bitstream decoder
  * Copyright (c) 2000,2001 Fabrice Bellard
  * H263+ support.
  * Copyright (c) 2001 Juan J. Sierralta P
  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
  *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
  * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 /**
  * @file
  * h263 decoder.
  */
 
-#define UNCHECKED_BITSTREAM_READER 1
-
 //#define DEBUG
 #include <limits.h>
 
 #include "libavutil/mathematics.h"
 #include "dsputil.h"
 #include "avcodec.h"
 #include "mpegvideo.h"
 #include "h263.h"
 #include "mathops.h"
 #include "unary.h"
@@ skipping 1082 matching lines @@
                 v |= get_sbits(&s->gb, 8)<<8;
                 av_log(s->avctx, AV_LOG_DEBUG, " %5d", v);
             }
             av_log(s->avctx, AV_LOG_DEBUG, "\n");
         }
         for(i=0; i<50; i++) av_log(s->avctx, AV_LOG_DEBUG, "%d", get_bits1(&s->gb));
     }
 
     return 0;
 }