Use file: URIs instead of local paths, fixes use with more recent webkit

2009-02-19  Enrico Tröge  <enrico.troeger@uvena.de>

	* src/dh-assistant-view.c: (assistant_view_set_link):
	* src/dh-book-tree.c: (book_tree_find_uri_foreach):
	* src/dh-link.c: (link_free), (dh_link_new):
	* src/dh-link.h: Use file: URIs instead of local paths, fixes use
	with more recent webkit versions.

svn path=/trunk/; revision=1265