[rt-users] Need "DB_PORT" in Makefile and support throughout build

[Jeff Blaine]

FWIW, the 'DB_HOST = localhost;port=5433' trick does not work.

% make dropdb
...
Dropping Pg database rt2.
DBI->connect(dbname=template1;host=localhost;port=5433) failed:
connectDBStart() -- connect() failed: Connection refused at
/rcf/rt/lib/perl5/site_perl/5.6.1/DBIx/DataSource/Driver.pm line 74
connectDBStart() -- connect() failed: Connection refused at
/rcf/rt/lib/perl5/site_perl/5.6.1/DBIx/DataSource/Driver.pm line 74,
<STDIN> line 2.
% psql -p 5433 -l
  List of databases
 Database  |  Owner   
-----------+----------
 template0 | postgres
 template1 | postgres
(2 rows)