[poppler] [Patch] New glib api to get text

[Kristian Høgsberg]

Marco Pesenti Gritti wrote:
> Little self explanatory patch attached. We need to add real text
> selection support at some point but I think something like this doesnt
> hurt in the mean time.
> I've reimplemented evince clipboard support using it.

Committed, with a small change to reverse the y-coordinates to be PDF 
style coordinates, i.e. origin at lower left corner and the y axis 
extending towards to top of the page.

cheers,
Kristian