Log Message:
Update to 0.6.4a; PKG_OPTIONS-ize the type of crypto used and the databases
available for the datastore.  It almost works now.

(On NetBSD 2.0, it runs for me, but has a lot of trouble trying to connect
to peers; it will open connections in nonblocking mode, but somehow not get
any responses to "sent" data. Methinks there are some nonblocking socket
no-no's in the code that just happen to work on Linux.)