Import zlib-1.2.3 library

zlib/ChangeLog:
  Import zlib-1.2.3
zlib/FAQ:
  Import zlib-1.2.3
zlib/README:
  Import zlib-1.2.3
zlib/adler32.c:
  Import zlib-1.2.3
zlib/compress.c:
  Import zlib-1.2.3
zlib/crc32.c:
  Import zlib-1.2.3
zlib/deflate.c:
  Import zlib-1.2.3
zlib/deflate.h:
  Import zlib-1.2.3
zlib/gzio.c:
  Import zlib-1.2.3
zlib/infback.c:
  Import zlib-1.2.3
zlib/inffast.c:
  Import zlib-1.2.3
zlib/inflate.c:
  Import zlib-1.2.3
zlib/inflate.h:
  Import zlib-1.2.3
zlib/inftrees.c:
  Import zlib-1.2.3
zlib/inftrees.h:
  Import zlib-1.2.3
zlib/trees.c:
  Import zlib-1.2.3
zlib/zconf.h:
  Import zlib-1.2.3
zlib/zlib.3:
  Import zlib-1.2.3
zlib/zlib.h:
  Import zlib-1.2.3
zlib/zutil.c:
  Import zlib-1.2.3
zlib/zutil.h:
  Import zlib-1.2.3
zlib/README.MySQL:
  Import zlib-1.2.3

1 files changed, 16 insertions, 17 deletions

diff --git a/zlib/zutil.c b/zlib/zutil.c
index 0ef4f99f57e..d55f5948a37 100644
--- a/zlib/zutil.c
+++ b/zlib/zutil.c
@@ -1,5 +1,5 @@
 /* zutil.c -- target dependent utility functions for the compression library
- * Copyright (C) 1995-2003 Jean-loup Gailly.
+ * Copyright (C) 1995-2005 Jean-loup Gailly.
  * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
@@ -11,10 +11,6 @@
 struct internal_state      {int dummy;}; /* for buggy compilers */
 #endif
 
-#ifndef STDC
-extern void exit OF((int));
-#endif
-
 const char * const z_errmsg[10] = {
 "need dictionary",     /* Z_NEED_DICT       2  */
 "stream end",          /* Z_STREAM_END      1  */
@@ -78,38 +74,38 @@ uLong ZEXPORT zlibCompileFlags()
     flags += 1 << 13;
 #endif
 #ifdef NO_GZCOMPRESS
-    flags += 1 << 16;
+    flags += 1L << 16;
 #endif
 #ifdef NO_GZIP
-    flags += 1 << 17;
+    flags += 1L << 17;
 #endif
 #ifdef PKZIP_BUG_WORKAROUND
-    flags += 1 << 20;
+    flags += 1L << 20;
 #endif
 #ifdef FASTEST
-    flags += 1 << 21;
+    flags += 1L << 21;
 #endif
 #ifdef STDC
 #  ifdef NO_vsnprintf
-        flags += 1 << 25;
+        flags += 1L << 25;
 #    ifdef HAS_vsprintf_void
-        flags += 1 << 26;
+        flags += 1L << 26;
 #    endif
 #  else
 #    ifdef HAS_vsnprintf_void
-        flags += 1 << 26;
+        flags += 1L << 26;
 #    endif
 #  endif
 #else
-        flags += 1 << 24;
+        flags += 1L << 24;
 #  ifdef NO_snprintf
-        flags += 1 << 25;
+        flags += 1L << 25;
 #    ifdef HAS_sprintf_void
-        flags += 1 << 26;
+        flags += 1L << 26;
 #    endif
 #  else
 #    ifdef HAS_snprintf_void
-        flags += 1 << 26;
+        flags += 1L << 26;
 #    endif
 #  endif
 #endif
@@ -141,7 +137,10 @@ const char * ZEXPORT zError(err)
 }
 
 #if defined(_WIN32_WCE)
-    /* does not exist on WCE */
+    /* The Microsoft C Run-Time Library for Windows CE doesn't have
+     * errno.  We define it as a global variable to simplify porting.
+     * Its value is always 0 and should not be used.
+     */
     int errno = 0;
 #endif