[poppler] Another Patch

[Kristian Høgsberg]

Jonathan Blandford wrote:
> This one adds PopplerIndexIter to poppler-document.h.  This lets me
> extract the index of a document.  The API isn't quite right -- we are
> going to need a PopplerAction class instead of my quick hack of
> poppler_index_iter_get_values().  It lets me get evince indexing
> (mostly) working with the glib API.

Great work, thanks.
Kristian