Remove ability for Sniper to capture churches.
fix a rounding problem in SHP(TS) offset floating point math

closes #5765
Remove invalid sniper actor from Poseidon map.
Merge pull request #5742 from tomlane/sniperChurches

Remove ability for Sniper to capture churches.
Merge pull request #5786 from Mailaender/shp-ts-offset-fix

Fixed Tiberian Sun construction yard flickering