http://jdbc.postgresql.org/documentation/81/connect.html lists the parameters that can be used to setup a jdbc connection with postgres 8.1.
Many of them are not supported by our current datastore.
A workaround seems to give a database name that includes the parameters, something like:
to enable ssl transport, but it's less than ideal. Explicit support for the extra parameters should be added... maybe even as a single parameter,
such as "extraConnectionParams".