updating hakyll and pandoc for F19

[Jens Petersen]

> >> If you are a Fedora Packager you could help by reviewing
> >> ghc-lrucache [1]
> > 
> > I can try to take a pass at that this afternoon.  I think I'm
> > probably
> > qualified - I'm a Packager, have co-maint on a few packages (but
> > don't
> > have any of my own yet).  If for some reason I don't meet the
> > requirements to do a review, I can do a prelim one anyway if that
> > is
> > helpful.
> 
> Done!

Thanks a lot, Michael!  I have built it, so pandoc and hakyll updating for f19
should be no problem now - though branching has already happened.

Jens