Check for zlib with a zzlibCompileFlags() function in config/ac-macros/zlib.m4.

(Patch provided by serg)


config/ac-macros/zlib.m4:
  Check for zlib with a zzlibCompileFlags() function.
  This makes it pick the bundled zlib if there's an old installed version
  (which wouldn't work).

config/ac-macros/zlib.m4

@@ -19,7 +19,7 @@ INCLUDES="$INCLUDES $ZLIB_INCLUDES"
 LIBS="$LIBS $ZLIB_LIBS"
 AC_CACHE_VAL([mysql_cv_compress],
   [AC_TRY_LINK([#include <zlib.h>],
-    [return compress(0, (unsigned long*) 0, "", 0);],
+    [return zlibCompileFlags();],
     [mysql_cv_compress="yes"
     AC_MSG_RESULT([ok])],
     [mysql_cv_compress="no"])