BUG #3614: pg_config returns incorrect information for includedir-server

The following bug has been logged online:

Bug reference: 3614
Logged by: Michael Akinde
Email address: michael(dot)akinde(at)met(dot)no
PostgreSQL version: 8.2.4
Operating system: linux/Fedora Core 5
Description: pg_config returns incorrect information for
includedir-server
Details:

Postgres server is configured and installed to
prefix=~/local/pgsql

Running:

pg_config --includedir-server

Returns:

~/local/pgsql/include/postgresql/server

However, the server files are in fact installed to:

~/local/pgsql/include/server

This is a problem for the compilation/installation of packages that utilize
this option - e.g., postgis.

This issue seems to be general to many of the paths returned - pg_config
inserts /postgresql/ - while the actual installation directory does not
include this path.