BUG #5740: contrib/spi/moddatetime.c doesn't work with timezones.

The following bug has been logged online:

Bug reference: 5740
Logged by: Dirk Heinrichs
Email address: dirk(dot)heinrichs(at)altum(dot)de
PostgreSQL version: 8.4.5
Operating system: Linux
Description: contrib/spi/moddatetime.c doesn't work with timezones.
Details:

The moddatetime function provided by this module only works on columns of
type "timestamp without time zone". Would be nice if it could also provide
an analogous function moddatetime_tz which provides the same functionality
for columns of type "timestamp with time zone".

Thanks...

Dirk