Bug#453161: Patch to fix libpri FTBFS

[Faidon Liambotis]

Aurelien Jarno wrote:
> As far as I understand, the patch is correct. If you need a header you
> have to include it and do not assume it is included by another one. This
> also improves portability among various OS.
My concern was that this is breaking various unrelated packages.
Lucas said though that this is not affecting many (~10) so it's probably
fine.

Regards,
Faidon