This const looks to only be there for "convenience", or _possibly_ was created
with future normalization or special handling in mind.
In either case, currently it is just a direct copy (alias) for runtime.GOOS,
and defining our own type for this gives the impression that it's more than
that. It's only used in a single place, and there's no external consumers, so
let's deprecate this const, and use runtime.GOOS instead.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
5c78cbd3be