the MD5 methods into the SHA docs (substituting "sha" for "md5", of course,
and changing the stuff that depended on digest size accordingly).
Fred, don't trust me!
SourceForge doesn't choke on this batch :-)
I'm not entirely sure this is 100% correct. The patch changes an
\index{persistency} to \index{presistence}, and I don't know what \index{}
does. But it seems to do so persi--er, consistently, so I hope it isn't a
problem.