Made adjustments to the output of windowsconstgen to please go fmt.
Partial go fmt. Will do the rest over the next few commits. While I'm not too happy about it, everyone else uses go fmt, and pull requests will be more convenient if I just do it. (Also do it now, because when I change the Windows backend things are going to change...)
More go fmt.
More go fmt.
More go fmt.
More go fmt.
More go fmt.
More go fmt.
More go fmt.
More go fmt.
More go fmt.
More go fmt.
More go fmt.
More go fmt.
More go fmt.
More go fmt.
More go fmt. That completes the main package go fmt. Won't bother with test or tools.
added Center function to window