validate building placement in ResolveOrder as well
fix validation of startgame order
Merge pull request #3311 from chrisforbes/placebuilding-resolve

validate building placement in ResolveOrder as well
integrate R8Reader with OpenRA file system
remove R8Reader from Utility
remove console spam from R8Reader
moved the r8 conversion to sequences

closes #2566

DONT MERGE: THE SUPPORT POWER ICONS SHIT IS BUSTED!