[prey] Demo feedback

[Ryan C. Gordon]

Dmitri Seletski wrote:
> yeah, i have 1650x1080(not sure about second value) screen resolution, 
> game didn't catch it automatically(used lower resolution instead).

This is fixed in the final builds...we decide default quality settings 
by how much memory is on the video card. In the demo build, we just 
default to 64 megabytes (the lowest settings), but you can override this 
on the command line...it doesn't change anything but the video defaults.

--ryan.