tests: autogenerate list of wrapped tests for `lib/' shell scripts * tests/gen-config-shell-tests: New script, generates distributed makefile snippet `tests/config-shell-tests.am' to list all tests that use the `get_shell_script' function, with names mangled to use suffix `-w.shtst', in ... * tests/Makefile.am (config_shell_tests): ... this macro, whose definition has been consequently removed from Makefile.am. (EXTRA_DIST): Distribute the new script. ($(srcdir)/config-shell-tests.am): Generate using the new script. (include): Include the `config-shell-tests.am' fragment. * bootstrap: Invoke `tests/gen-config-shell-tests' to generate `tests/config-shell-tests.am'. * tests/.gitignore: Ignore `config-shell-tests.am'. * tests/gen-parallel-tests: Fixlet in heading comments.