* tests/test-mcel-1.sh: New file, based on tests/test-mbrtowc-1.sh.
* tests/test-mcel-2.sh: New file, based on tests/test-mbrtowc-2.sh.
* tests/test-mcel-3.sh: New file, based on tests/test-mbrtowc-3.sh.
* tests/test-mcel-4.sh: New file, based on tests/test-mbrtowc-4.sh.
* tests/test-mcel-5.sh: New file, based on tests/test-mbrtowc-5.sh.
* modules/mcel-tests (Files): Add them. Add tests/macros.h,
m4/locale-fr.m4, m4/locale-ja.m4, m4/locale-zh.m4, m4/codeset.m4.
(Depends-on): Remove assert-h.
(configure.ac, Makefile.am): Essentially copy from
modules/mbrtowc-tests.