Convert openssl(1) x509 option handling

Convert openssl(1) x509 option handling

Apply new option handling to openssl(1) x509.
To handle incremental order value, using newly added OPTION_ORDER.

I left the descriptions for -CAform, -inform, and -outform as it was,
for now. These description would be fixed.
And digest option handler could be consolidated to one between
some subcommands in the future.

ok and comments from tb@,
and "I'd move forward with your current plan." from jsing@