Measure flips per second

Well, I like it but I dunno if other people will (even if you fast forward, it shows e.g. 30, as it's scaled by VPS.)  This means if the game is emulating slow (vps = 30) but internally the game is not frame skipping, it will stll show 60 fps (which was intentional...)

Also does not account for the frameskip setting.

-[Unknown]