Bug#1069094: mariadb: FTBFS on hurd-i386

Add Hurd to define __USE_FILE_OFFSET64 et al.

Origin: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1069094
Forwarded: no

Author: gnu-srs

storage/connect/ioapi.h

@@ -21,9 +21,10 @@
 #ifndef _ZLIBIOAPI64_H
 #define _ZLIBIOAPI64_H
 
-#if defined(__linux__)
+#if defined(__linux__) || defined (__GNU__)
 
-  // Linux needs this to support file operation on files larger then 4+GB
+  // Linux and Hurd needs this to support file operation on files larger
+  // than 4+GB.
   // But might need better if/def to select just the platforms that needs them.
 
         #ifndef __USE_FILE_OFFSET64