WinUAE 2.4.0 Beta 22

[Demon Cleaner]

Beta 22: (RC1)

- CPU Idle limit added, do not sleep if there are no frame time left, no more slowdowns if CPU Idle is set too high.
- Only use long frames to recalculate interlace autoscale positiong. (Autoscale jitter in some interlace setups)
- Autoscale didn't always ignore standard mode display limits when displaying programmed display modes.

[Harrison]

Finally a release candidate. Then a release and on to more betas.