[poppler] Making OCG suppression be recursive

[Brad Hards]

On Monday 04 May 2009 08:22:54 am Albert Astals Cid wrote:
> Hi the attached patch adds that if we do a Begin Marked Content that is
> suppressed and then we do a Begin Marked Content that is not suppressed
> without closing the first one, the operations are still not drawn.
>
> This fixes bug 16093, i think it's the correct way but as Carlos and Brad
> have worked more on Optional Content i'd like some more input if possible
> (i know i'm asking for much :-))
No objections from me.

Brad