[poppler] Making the poppler utils operate over stdin/stdout

[Dominic Lachowicz]

Hi Albert,

> Sorry for the late reply, if i understand correctly these patches make it
> impossible to work on a file called "-", right?

That's correct.

> Wouldn't it be better to add a -stdin switch or something similar?

I personally don't really care. I followed what the other programs did
with stdin (see, for example, pdftotext.cc:199). I'm happy to change
these. I was just striving for consistency with the other utils.

Best,
Dom
-- 
Counting bodies like sheep to the rhythm of the war drums.