New port: databases/postgresql-orafce

The "orafce" is a module of PostgreSQL. It implements of some functions from
the Oracle database. The functionality was verified on Oracle 10g, and the
module is useful for production work. This module contains some useful function
which can help with porting Oracle application to PostgreSQL or can be useful
generally.

WWW: https://github.com/orafce/orafce

PR: 219616
Submitted by: Jov <amutu@amutu.com>