- Add MASM assembler files for MSVC x64 projects to support vm_x86 in x64 mode

- Clean up ftol()/snapvector() mess
- Make use of SSE instructions for ftol()/snapvector() if available
- move ftol/snapvector pure assembler to inline assembler, this will add x86_64 and improve support for different calling conventions
- Set FPU control word at program startup to get consistent behaviour on all platforms

code/server/sv_game.c

@@ -426,7 +426,7 @@ intptr_t SV_GameSystemCalls( intptr_t *args ) {
 	case G_REAL_TIME:
 		return Com_RealTime( VMA(1) );
 	case G_SNAPVECTOR:
-		Sys_SnapVector( VMA(1) );
+		Q_SnapVector(VMA(1));
 		return 0;
 
 		//====================================