Log Message:
Unbreak ffmpeg on NetBSD/macppc... again -- and a big fat comment warning
about this next to the relevant piece of code.  Looking at the CVS logs,
it's the 3rd time I fix this.  This, in turn, fixes the build of libdlna.

To fix the package, use the "proper" syntax to enable PIC within the
configure script, instead of applying what seems to be a hack. As before,
i386 is left PIC-less or otherwise ffmpeg breaks.

Tested on macppc and amd64.