[poppler] [patch] Add additional user access permissions

[Kristian Høgsberg]

Brad Hards wrote:
> Section 3.5.2 of the PDF spec is about the standard encryption handler - 
> within that, Table 3.20 identifies a number of properties that we aren't 
> handling, or aren't handling exacty. Just as an indication, here is a simple 
> example about printing - see below.
> 
> Any objections to adding the rest of the properties to the API? 

Brad, I haven't actually checked with the spec, but your implementation 
looks good, so go for it.

> Any suggestions for what to do if we get an unknown security handler version?

Not sure about that.

Kristian