Updated pkgconfig

[Marc Matteo <marcm_(_at_)_lectroid_(_dot_)_net>]

Here is an update to pkgconfig 0.15.0:

http://www.lectroid.net/ports/pkgconfig.diff

This update itself doesn't change anything that effects OpenBSD but I
wanted to sync the port with the current version (that has been out for
quite some time).

I decided to again let the port build and statically link against its
own internal glib sources rather than pull in glib-1.2 from ports.  It
seemed kinda silly to build glib-1.2 to build glib-2.0 knowwhatimean?

Same drill, please test and comment.

Marc