Fix broken links on papers page.

documentation/papers/fjh_hons.ps.gz:
	Add a copy of Fergus's honours thesis -- previously this
	was hosted on his old CS webpage, which has long since been
	deleted.

documentation/papers/iclp87.ps.gz:
	Add a local copy of one of Zoltan's papers.

documentation/include/papers.inc:
	Fix links for the above papers.

	Delete the broken link to David Kemp's thesis.  (I cannot locate
	a copy of this online.)