Implement partial rendering of pages to decrease memory usage.
@jaliste
Submitted by Jose Aliste Link to original bug (#629322)
Description
This is a bug to track development of the refactoring needed in Evince to allow partial rendering of pages using a technique similar to tiled rendering.
This is not tiled rendering in the strict sense, since the idea I have is to make tiles of size roughly the screen, so we don't use too much memory when viewing a Pdf with a big zoom (say 1600%).
Version: git master