Update.

Update.

	* iconvdata/Makefile (modules): Add ISO_10367-BOX, MAC-IS, NATS-DANO,
	and NATS-SEFI.
	Define *-routines variables for new modules.
	(distribute): Add .c files for new modules.
	(awk-generated-headers): Add iso_10367-box.h, mac-is.h, nats-dano.h,
	and nats-sefi.h.
	Add rules for header generation.
	* iconvdata/gconv-modules: Add entries for new modules.
	* iconvdata/iso_10367-box.c: New file.
	* iconvdata/mac-is.c: New file.
	* iconvdata/nats-dano.c: New file.
	* iconvdata/nats-sefi.c: New file.

	Add rules for header generation.