Fix steamworks.GetDownloadedItems returning nothing sometimes * When subbed item count == downloaded item count Copy over LuaJit from x86-64, publish launcher EXEs Resolve some pointer truncation issues for 64 bit builds Minor merges from x86-64 Clamp engine sleeping to 0-200ms, undo doubles for m_flMinFrameTime Fixed a number of 64bit compile warnings More 64bit compile warning fixes More compile warning fixes & TF2 SDK merges More 64bit merges & fixes