bfm/bfm_blackbox.cpp: Added driver for Bellfruit Black Box electromechanical fruit machines. (#10417)
* machine/em_reel.cpp: Encapsulated electromechanical reel simulation.
* barcrest/mpu1.cpp: Refactored to use new electromechanical reel device.
New systems marked not working
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Nudge Climber (Bellfruit) (Black Box) (5p Stake, £1 Jackpot, all cash)
21 Up (Bellfruit) (Black Box) (5p Stake, £1 Jackpot)
Bell Trail (Bellfruit) (Black Box) (5p Stake, £1 Jackpot)
The Nudge Machine (ADMC) (Black Box) (5p Stake, £1/£2 Jackpot)
Upstairs 'N' Downstairs (Bellfruit) (Black Box) (5p Stake, £1 Jackpot)
Double It (Bellfruit) (Black Box) (10p Stake, £2 Jackpot)
Fire Cracker (Bellfruit) (Black Box) (10p Stake, £2 Jackpot)
Oranges And Lemons (Bellfruit) (Black Box) (10p Stake, £2 Jackpot)
Golden Spin (BWB) (Black Box) (MK1.5, 5p Stake, £50 Jackpot)
New clones marked not working
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21 Up (Bellfruit) (Black Box) (10p Stake, £2 Jackpot)
Reel Gambler (Bellfruit) (Black Box) (10p Stake, £2 Jackpot)
Upstairs 'N' Downstairs (Bellfruit) (Black Box) (5p Stake, £1 Jackpot, all cash)
Spin Up (CTL) (Black Box) (10p Stake, £3 Jackpot)
Crackerjack (Bellfruit) (Black Box) (5p Stake, £2 Jackpot)
Fiesta (Associated Leisure) (Black Box) (2p Stake, £1/£2 Jackpot)
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