Essential compile fix for all Solaris (manual transfer from 5.0, as the merge...

Essential compile fix for all Solaris (manual transfer from 5.0, as the merge is still outstanding).

sql/examples/ha_tina.cc

@@ -651,7 +651,9 @@ int ha_tina::rnd_init(bool scan)
   current_position= next_position= 0;
   records= 0;
   chain_ptr= chain;
+#ifdef MADV_SEQUENTIAL
   (void)madvise(share->mapped_file,share->file_stat.st_size,MADV_SEQUENTIAL);
+#endif
 
   DBUG_RETURN(0);
 }