JIT: remove "fast interrupts" option set and then used nowhere
Merge branch 'nofastinterrupts' of https://github.com/FioraAeterna/dolphin into VR-Hydra
Add VR frames per second in title bar.
It counts the number of calls to ovrHmd_EndFrame per second. That will be useful for asynchronous timewarp, and I also plan to add synchronous timewarp frames.