The idea is that we want to prevent backends from parsing the tokens
themselves, which is pretty much a requirement for adding SM4 support.

Thanks to Paul Vriens for pointing out the need for this.

Add more IP option defines.

Add defines for address string lengths for IPv4 and IPv6.

We'd have to use the Windows environment anyway, not the Unix one.

We were passing uninitialized data which would ultimately end up in the
registry.

This value does not exist directly under the product key on Windows.