[mythtv] Bump version 1.9.25

- Handle GUI events to activate/deactivate power saving mode
- Don't send WOL when power saving mode is activated
- Don't block shutdown when power saving mode is activated
- Handle hang: Always retry protocol connection after hang
- Handle hang: Reconnect event handler after hanging of control connection
- Block backend shutdown by default: New setting
- Fix refreshing recordings and schedules on wake up
- Minor fixes and typo