Update.

Update.

	* iconvdata/Makefile (modules): Add ISO-2022-CN.
	Add link rules for this module.
	(distribute): Add iso-2022-cn.c and cns11643l2.h.
	* iconvdata/cns11643l2.h: New file.
	* iconvdata/iso-2022-cn.c: New file.
	* iconvdata/gconv-modules: Add entries for ISO-2022-CN module.

	* iconvdata/cns11643l1.h (cns11643l1_to_ucs4): Make string argument
	unsigned.
	(ucs4_to_cns11643l1): Likewise.
	* iconvdata/euc-tw.c: Correct parameter passed to cns11643l1_to_ucs4.

	* iconvdata/iso-2022-kr.c: Remove unnecessary test from conversion
	loop to UCS4.
	Optimize recognition of escape sequences a bit.