[evince] fast display of scanned documents

[Jorg Kewisch <jorg optonline net>]

I often have to flip (forward and backward) through large scanned
documents in pdf format. loading pages takes a long time and evince
stores only a few pages in memory. 
My computer has 96 Gbytes and 12 cores (for finite element calculations,
sorry for bragging), so it could load the whole document into memory as
soon as I open it.
Is there:
- a configuration file that I can change?
- a dimension in the program that I can change and recompile?

Jorg