weap/afld HP reduced; HQ adjustments

Weapons Factory & Nod Airstrip HP reduced greatly (to 1000), so that nuke can now destroy them (& Ion Cannon almost but not quite).
Advanced Communication Center's HP increased from 1000 to 1200, to give it some more breathing room vs. ion cannon strikes.
Added ANYHQ as a custom pre-requisite, so that the temple of nod and advanced communications center will also allow building of advanced units.