A couple of minor things, in the script in files/:
+LIQUIBASE_HOME=${LOCALBASE}/share/java/classes/liquibase
LOCALBASE is "where other ports have already been installed", the script
should use TRUEPREFIX instead i.e. "Base directory for the current port
installation".
And in README,
--classpath=/usr/local/share/postgresql/java/postgresql.jar
The hardcoded /usr/local here should be ${LOCALBASE}.
Rest is ok.
