tests: fix typo in cmdline_wrap skip check.

* tests/cmdline_wrap.at (fail_list): fix a typo in loop script
text.

Signed-off-by: Gary V. Vaughan <gary@gnu.org>
maint: .PHONY rules to protect gmake from pathological file names.

* Makefile.am (.PHONY): Add install-scripts-local,
check-interactive, check-noninteractive-old,
check-noninteractive-new and check-noninteractive.

Signed-off-by: Gary V. Vaughan <gary@gnu.org>