Some new cert-related stuff wasn't documented in the usage message
and/or man page; and the longer-standing "-E fptype" was entirely
omitted from the usage message.
I've filled in some text about prime generation methods and Ed448,
which were all the things marked as 'review before release'.
While I'm at it, also filled in a reasonable enough DSA key length
recommendation, because the FIXME comment in that section was within
sight of one of the places I was editing. FIPS 186-4 seemed to think
that RSA and DSA had comparable relationships between the key length
and practical security level, so I see no reason not to use the same
recommendation for both key types.
This seems more useful than the previous behaviour of not prompting for
a passphrase and only emitting the public part; if we want that back
I suppose we could invent a "-O text-public".
Also, document the text dump format a bit in the man page.
When I added the psusan man page, I noticed that they've all got
impenetrable names like 'man-pl.but' to fit within 8.3 naming. But
this source base hasn't had to worry about 8.3 naming conventions in a
long time, so I think I can safely rename all those files to ones
whose purpose is more obvious.
