and made them exclusive (still some logic to wire to make things even
better, but now it's more usable than before).
Added mouse modes (normal, selection, editing). Dragging the page in normal
mode is back. Added link-hovering example (on a top-left rect) to help
Albert to implement "link following" in a way as clean as possible.
Page is centered in the view and has an outline if it is smaller than the
viewport. In FitTo* mode resizing also resizes the page (done syncronously
but this will change).
Note: it consumes (doesn't leak!) lots of memory because all you see is
cached and the memory management is not implemented atm.

svn path=/branches/kpdf_experiments/kdegraphics/kpdf/; revision=346257