[2/5] windowscodecs: Basic tests for tiff encoder options (try2)

[Vincent Povirk]

> @Vincent: I thought about adding the properties one at a time but it seemed
> a bit like overkill for the tiff encoder, which has only two options. But I
> will defenitly do this for the jpeg encoder, which has much more options.

Well, actually, on further consideration I can understand why you did
it this way, since adding a property is very easy and doesn't really
require implementing that property. Though it'd be nice to get some
notification when a property is used that we don't support.