Add a recursive option to 'openssl storeutl'

Simply put, any NAME type OSS_STORE_INTO is a new object that can be
looked into, and potentially lead to a whole tree of data to dive
into.  The recursive option allows someone to view the whole tree and
its data in one go.

Reviewed-by: Andy Polyakov <appro@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/4336)