add printer options

[wmin0]

Allow command line options to specify document printer options including PaperFormat, PaperSize, PaperOrientation

[dagwieers]

I like your change a lot, in fact I have been looking into doing this but never found a way to get it done.
Now there's one thing I would like to change. I prefer it works like this:

-P PaperFormat=A4
-P PaperSize=200x100
-P PaperOrientation=portrait

What do you think ?

[dagwieers]

I noticed that it may not be as easy as to map options/values directly into the API because of the enum...

[wmin0]

updated, like this?