Log Message:
Update sysutils/mklivecd to 0.4 (Say hello to GNU GRUB+ISO9660 patch).

Changes:

	o Added MKISOFS_ARGS option.
	o mklivecd no longer uses NetBSD's Makefiles to create the
	  boot image, GNU GRUB with the ISO9660 patch is used instead.

With Grub's addition, mklivecd can now boot multiple kernels with
different configurations. Please read the MESSAGE to see the instructions.

mklivecd now should work in 1.6 systems (not tested).