Add jdbc-postgresql80-314 to pkgsrc:

Add jdbc-postgresql80-314 to pkgsrc:

This is a pure Java (Type IV) JDBC driver for the PostgreSQL
database.  It allows Java programs to connect to a PostgreSQL
database using standard, database independent Java code.

The driver provides a reasonably complete implementation of the
JDBC 3 specification in addition to some PostgreSQL specific
extensions.

This package installs the official jdbc3 jarfile from jdbc.postgresql.org,
but also download the src to include the README and example java files. As
such it does not require java at build time.