[Buildroot] [PATCH v3] infra: introduce github helper function

[Mischa Jonker]

Hi Thomas,

First of all, thanks for looking at the patches.
 
> This patch only changes the existing http(s) github downloads. Do you plan to
> create a follow-up patch to replace the current git:// github packages to use
> the new helper too (and thus the http tarball method)?

I have not planned that yet, but of course I can take a look at it. When is it required?

Mischa