Make the version-4 ioctl interface the default kernel configuration option.

--- diff/drivers/md/Kconfig	2003-10-09 09:47:34.000000000 +0100
+++ source/drivers/md/Kconfig	2003-10-29 14:42:26.000000000 +0000
@@ -138,6 +138,7 @@
 config DM_IOCTL_V4
 	bool "ioctl interface version 4"
 	depends on BLK_DEV_DM
+	default y
 	---help---
 	  Recent tools use a new version of the ioctl interface, only
           select this option if you intend using such tools.