build: Silence automake about escaping #.
* tests/cms/Makefile.am (CLEANFILE): Use printf to generate 043 char. * tests/openpgp/Makefile.am (CLEANFILES): Ditto. * tests/pkits/Makefile.am (CLEANFILES): Ditto.
- Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>