Loading a savestate with lua mods causes huge slowdown

This is due to how save/loading savestates work. Routines to optimize:

• SaveMisc
• Mobjnum counter
• SaveWorld
• SavePolyObjects
• SaveThinkers
• SaveSpecials
• SaveColormaps
• SaveWayPoints
• Lua_Archive - Not possible?
• SaveLuaBanks

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• LoadMisc
• LoadWorld
• LoadPolyObjects
• LoadThinkers
• LoadSpecials
• LoadColormaps
• LoadWayPoints
• RelinkPointers
• FinishMobjs
• Lua_UnArchive
• LoadLuaBanks