BUG #6465: postgresql-pltcl refuses to compile with 9.1, and FreeBSD does support threaded python

The following bug has been logged on the website:

Bug reference:      6465
Logged by:          Chris Rees
Email address:      crees@FreeBSD.org
PostgreSQL version: 9.1.2
Operating system:   FreeBSD
Description:=20=20=20=20=20=20=20=20

Hey all,

Two patches:

https://redports.org/browser/crees/databases/postgresql91-server/files/patc=
h-configure.in

>From a user (Pierre David) who has reported that the patch fixed compilati=
on
of pltcl (http://bugs.freebsd.org/164796)

https://redports.org/browser/crees/databases/postgresql91-server/files/patc=
h-config-python-m4

Girgen has disabled the threaded python check in the port for a while now,
so this could go in.

Thanks!