Simple adjustments for DSO removal

openssl.cnf.5 will need a major overhaul. But that isn't new...

crypto HISTORY up to 0.9.7; researched from OpenSSL git

Add Copyright and license.
Drop the empty RETURN VALUES section.

various cleanup;

first pass; ok schwarze

Convert five more manuals from POD to mdoc.
I found drafts of these in my tree, probably originally from
Max Fillinger, that just needed minor polishing.