Fix Windows build

[AstralStorm]

Fixes #537. Stubby will need an update once its service fix PR is merged.

[saradickinson]

@wtoorop I've merged the related Stubby PR and updated the submodule. With the fixes in this PR everything builds on Windows again, so this can be merged if you are happy with it.

[wtoorop]

@wtoorop I've merged the related Stubby PR and updated the submodule. With the fixes in this PR everything builds on Windows again, so this can be merged if you are happy with it.

Yes, will do, I just have to make sure the changes to gldns are also in upstream Unbound's sldns so they won't be reversed in the future again when syncing up with Unbound.

[BillyONeal]

We see this build failure in the update submitted by @jiayuehua . See microsoft/vcpkg#34188

(As an aside it would be nice to have a variable we can turn off to disable generating docs instead of patching but that's unrelated)

[BillyONeal]

I note that their patch also guards for HAVE_TIME_H

[MonicaLiu0311]

Any progress here?