fix various formatting nits in CMP contribution chunks 1-6 found by the new util...

fix various formatting nits in CMP contribution chunks 1-6 found by the new util/check-format.pl

in addition:
correct wording in doc, comments, and parameter names: self-signed -> self-issued where appropriate

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Bernd Edlinger <bernd.edlinger@hotmail.de>
(Merged from https://github.com/openssl/openssl/pull/10620)