Added JBcrypt library, moved it into package called jbcrypt.
Got database working on local machine, now to test on openshift server.
Hopefully it will work without modifications.
For now, login.jsp has tacked onto the end of it a little script that
queries the database and displays the result.
Modified openshift configuration for context.xml to use the limited user
account instead of default admin account.
Renamed environment variables; apparently they only get replaced with
their actual values on the server if they begin with "OPENSHIFT_"