Not to that extent. They won't break the text up into pages to match your page size. I think if you have the standard version of Adobe, that allows editing of PDF's, you can repaginate, but I don't think most readers can do that. It might be easier for you to just supply a Doc or ODT file... :unsure:
Yeah, PDF is explicitly a layout format. You can resize the pages, but their aspect ratio and the positions of all elements are fixed, so if you've formatted for e.g. A4 paper and the person printing it is using U.S. Letter-size, they'll wind up with particularly wide margins on the left and right. There's no way for the text at the bottom of page 1 to flow onto page 2 so the margins can be made even, because the pages are individually encapsulated.
Looks like the only reason you're using PDF is to embed the image, there's no fancy layout otherwise. Seconded that you should use a word processor format (.odt or .doc for maximum compatibility), or even just HTML. Something where the content is the primary data and the layout is flexible.
Right. I'll bundle the document file in future updates.
If you haven't considered it, perhaps you can host the non-essential documentation online, e.g. using a free wiki hosting site. It doesn't work well if you have multiple versions released, but it would be a lot easier to format and cross reference.
I used to do that with my mods. But as you stated, it ended up making the updating process even more tiresome with each new build.