Use generated shim headers for zlib.

third_party/zlib/contrib/minizip/zip.c

 /* zip.c -- IO on .zip files using zlib
    Version 1.1, February 14h, 2010
    part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html )
 
          Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html )
 
          Modifications for Zip64 support
          Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com )
 
          For more info read MiniZip_info.txt
 
          Changes
    Oct-2009 - Mathias Svensson - Remove old C style function prototypes
    Oct-2009 - Mathias Svensson - Added Zip64 Support when creating new file archives
    Oct-2009 - Mathias Svensson - Did some code cleanup and refactoring to get better overview of some functions.
    Oct-2009 - Mathias Svensson - Added zipRemoveExtraInfoBlock to strip extra field data from its ZIP64 data
                                  It is used when recreting zip archive with RAW when deleting items from a zip.
                                  ZIP64 data is automaticly added to items that needs it, and existing ZIP64 data need to be removed.
    Oct-2009 - Mathias Svensson - Added support for BZIP2 as compression mode (bzip2 lib is required)
    Jan-2010 - back to unzip and minizip 1.0 name scheme, with compatibility layer
 
 */
 
 
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <time.h>
-#if defined(USE_SYSTEM_ZLIB)
-#include <zlib.h>
-#else
 #include "third_party/zlib/zlib.h"
-#endif
 #include "zip.h"
 
 #ifdef STDC
 #  include <stddef.h>
 #  include <string.h>
 #  include <stdlib.h>
 #endif
 #ifdef NO_ERRNO_H
     extern int errno;
 #else
@@ skipping 1955 matching lines @@
 
     retVal = ZIP_OK;
   }
   else
     retVal = ZIP_ERRNO;
 
   TRYFREE(pNewHeader);
 
   return retVal;
 }