mbstoc32s is like mbstowcs, except that it produces a sequence of char32_t
wide characters.


2020-01-05  Bruno Haible  <bruno@clisp.org>

	mbstoc32s: Add tests.
	* tests/test-mbstoc32s.c: New file, based on tests/test-mbsrtoc32s.c.
	* tests/test-mbstoc32s-1.sh: New file, based on
	tests/test-mbsrtoc32s-1.sh.
	* tests/test-mbstoc32s-2.sh: New file, based on
	tests/test-mbsrtoc32s-2.sh.
	* tests/test-mbstoc32s-3.sh: New file, based on
	tests/test-mbsrtoc32s-3.sh.
	* tests/test-mbstoc32s-4.sh: New file, based on
	tests/test-mbsrtoc32s-4.sh.
	* modules/mbstoc32s-tests: New file, based on modules/mbsrtoc32s-tests.

	mbstoc32s: New module.
	* lib/uchar.in.h (mbstoc32s): New declaration.
	* lib/mbstoc32s.c: New file.
	* m4/uchar.m4 (gl_UCHAR_H_DEFAULTS): Initialize GNULIB_MBSTOC32S.
	* modules/uchar (Makefile.am): Substitute GNULIB_MBSTOC32S.
	* modules/mbstoc32s: New file.
	* tests/test-uchar-c++.cc: Test the signature of mbstoc32s.
	* doc/posix-functions/mbstowcs.texi: Mention the new module.