Issue #9704: Add zlib files necessary to run configure
and make.
diff --git a/Modules/zlib/gzguts.h b/Modules/zlib/gzguts.h
new file mode 100644
index 0000000..0f8fb79
--- /dev/null
+++ b/Modules/zlib/gzguts.h
@@ -0,0 +1,132 @@
+/* gzguts.h -- zlib internal header definitions for gz* operations
+ * Copyright (C) 2004, 2005, 2010 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+#ifdef _LARGEFILE64_SOURCE
+# ifndef _LARGEFILE_SOURCE
+# define _LARGEFILE_SOURCE 1
+# endif
+# ifdef _FILE_OFFSET_BITS
+# undef _FILE_OFFSET_BITS
+# endif
+#endif
+
+#if ((__GNUC__-0) * 10 + __GNUC_MINOR__-0 >= 33) && !defined(NO_VIZ)
+# define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
+#else
+# define ZLIB_INTERNAL
+#endif
+
+#include <stdio.h>
+#include "zlib.h"
+#ifdef STDC
+# include <string.h>
+# include <stdlib.h>
+# include <limits.h>
+#endif
+#include <fcntl.h>
+
+#ifdef NO_DEFLATE /* for compatibility with old definition */
+# define NO_GZCOMPRESS
+#endif
+
+#ifdef _MSC_VER
+# include <io.h>
+# define vsnprintf _vsnprintf
+#endif
+
+#ifndef local
+# define local static
+#endif
+/* compile with -Dlocal if your debugger can't find static symbols */
+
+/* gz* functions always use library allocation functions */
+#ifndef STDC
+ extern voidp malloc OF((uInt size));
+ extern void free OF((voidpf ptr));
+#endif
+
+/* get errno and strerror definition */
+#if defined UNDER_CE
+# include <windows.h>
+# define zstrerror() gz_strwinerror((DWORD)GetLastError())
+#else
+# ifdef STDC
+# include <errno.h>
+# define zstrerror() strerror(errno)
+# else
+# define zstrerror() "stdio error (consult errno)"
+# endif
+#endif
+
+/* provide prototypes for these when building zlib without LFS */
+#if !defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0
+ ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *));
+ ZEXTERN z_off64_t ZEXPORT gzseek64 OF((gzFile, z_off64_t, int));
+ ZEXTERN z_off64_t ZEXPORT gztell64 OF((gzFile));
+ ZEXTERN z_off64_t ZEXPORT gzoffset64 OF((gzFile));
+#endif
+
+/* default i/o buffer size -- double this for output when reading */
+#define GZBUFSIZE 8192
+
+/* gzip modes, also provide a little integrity check on the passed structure */
+#define GZ_NONE 0
+#define GZ_READ 7247
+#define GZ_WRITE 31153
+#define GZ_APPEND 1 /* mode set to GZ_WRITE after the file is opened */
+
+/* values for gz_state how */
+#define LOOK 0 /* look for a gzip header */
+#define COPY 1 /* copy input directly */
+#define GZIP 2 /* decompress a gzip stream */
+
+/* internal gzip file state data structure */
+typedef struct {
+ /* used for both reading and writing */
+ int mode; /* see gzip modes above */
+ int fd; /* file descriptor */
+ char *path; /* path or fd for error messages */
+ z_off64_t pos; /* current position in uncompressed data */
+ unsigned size; /* buffer size, zero if not allocated yet */
+ unsigned want; /* requested buffer size, default is GZBUFSIZE */
+ unsigned char *in; /* input buffer */
+ unsigned char *out; /* output buffer (double-sized when reading) */
+ unsigned char *next; /* next output data to deliver or write */
+ /* just for reading */
+ unsigned have; /* amount of output data unused at next */
+ int eof; /* true if end of input file reached */
+ z_off64_t start; /* where the gzip data started, for rewinding */
+ z_off64_t raw; /* where the raw data started, for seeking */
+ int how; /* 0: get header, 1: copy, 2: decompress */
+ int direct; /* true if last read direct, false if gzip */
+ /* just for writing */
+ int level; /* compression level */
+ int strategy; /* compression strategy */
+ /* seek request */
+ z_off64_t skip; /* amount to skip (already rewound if backwards) */
+ int seek; /* true if seek request pending */
+ /* error information */
+ int err; /* error code */
+ char *msg; /* error message */
+ /* zlib inflate or deflate stream */
+ z_stream strm; /* stream structure in-place (not a pointer) */
+} gz_state;
+typedef gz_state FAR *gz_statep;
+
+/* shared functions */
+void ZLIB_INTERNAL gz_error OF((gz_statep, int, const char *));
+#if defined UNDER_CE
+char ZLIB_INTERNAL *gz_strwinerror OF((DWORD error));
+#endif
+
+/* GT_OFF(x), where x is an unsigned value, is true if x > maximum z_off64_t
+ value -- needed when comparing unsigned to z_off64_t, which is signed
+ (possible z_off64_t types off_t, off64_t, and long are all signed) */
+#ifdef INT_MAX
+# define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > INT_MAX)
+#else
+unsigned ZLIB_INTERNAL gz_intmax OF((void));
+# define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > gz_intmax())
+#endif