* tests/test-c32snrtombs.c: New file, based on tests/test-wcsnrtombs.c.
* tests/test-c32snrtombs-1.sh: New file, based on
tests/test-wcsnrtombs1.sh.
* tests/test-c32snrtombs-2.sh: New file, based on
tests/test-wcsnrtombs2.sh.
* tests/test-c32snrtombs-3.sh: New file, based on
tests/test-wcsnrtombs3.sh.
* tests/test-c32snrtombs-4.sh: New file, based on
tests/test-wcsnrtombs4.sh.
* modules/c32snrtombs-tests: New file, based on
modules/wcsnrtombs-tests.