removing now unused functions. nw.
saa5050: devcb2. (nw)

(MESS) abc80x: Video cleanup. (nw)
converted tait8741 mcu hack to a device, kept it as 4 pack since driver anyway have to use real mcu in future (nw)
(MESS) Cleanups. (nw)
mc2661: devcb2. (nw)
(MESS) Moved teleprinter back to mess/machine. (nw)
using delegates instead of read/write_device_func in ppc core (nw)
fix compile