(svn r6497) -Fix r6165: Vehicles heading for depots when their orders contained "service in depot" displayed the stopping in depot string
This turned out to be due to OFB_HALT_IN_DEPOT and OFB_SERVICE_IF_NEEDED using the same bit
It appears that it doesn't matter for the code, so I adapted the string selection code to handle this

		.CODE

PUBLIC	_get_save_esp
_get_save_esp:
		MOV	RAX,RSP
		RET

PUBLIC	_rdtsc
_rdtsc:
		RDTSC
		MOV RCX,RDX
		SHL RCX,32
		AND RAX,0FFFFFFFFh
		OR  RAX,RCX
		RET

		END