Does SMAC Gold contain SMAC-X also?

[nessus]

I've already got a copy of SMAC and SMAC-X, recently bought the Linux version of the planetary pack, and now have friends who would like to pick up a Windows version (yeah, I know they should have done it a while ago - what can I say?). Any how, I see that SMAC Gold is easy enough to find, but do not see the Planetary Pack (except the Linux version by Loki) or SMAC-X anywhere. I would conclude (hopefully) that SMAC Gold is really the Planetary Pack, but I'm wondering - the friends really want the whole deal. Does anyone know?

Thanks in advance!