Fixes bug #15787. Fix makes available _FILE_OFFSET_BITS definition for

zlib library in order to enable support of files larger than 2Gb.
Providing an effective test is hardly possible, since the problem starts
only when archive table becomes larger than 2Gb.


zlib/gzio.c:
  Move include of zutil.h on top of gzio.c to include chain of
  zutil.h->zlib.h->zconf.h->config.h before including anything else.
zlib/zconf.h:
  Includes config.h in order to make _FILE_OFFSET_BITS definition available.

zlib/gzio.c

@@ -7,10 +7,10 @@
 
 /* @(#) $Id$ */
 
-#include <stdio.h>
-
 #include "zutil.h"
 
+#include <stdio.h>
+
 #ifdef NO_DEFLATE       /* for compatibility with old definition */
 #  define NO_GZCOMPRESS
 #endif

zlib/zconf.h

@@ -8,6 +8,10 @@
 #ifndef ZCONF_H
 #define ZCONF_H
 
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
 /*
  * If you *really* need a unique prefix for all types and library functions,
  * compile with -DZ_PREFIX. The "standard" zlib should be compiled without it.