SDL: fix OS X compile with non-official SDL [R. Belmont, based on a patch by Fernando Lemos]
Fixed at least black screen regression in DOA.
visual studio fix, I'm pretty sure it has a point on this. (nw)

src\mame\drivers\maygay1b.c(150) : warning C4806: '&' : unsafe operation: no value of type 'bool' promoted to type 'int' can equal the given constant
updated lsi53c810 to use delegates, and moved some formerly static 
stuff into bebox and model3 classes. nw.
Readding support for breaking into the debugger
(MESS) Apple II updates: [R. Belmont]
- Some minor cleanup to how post-IIe machines are handled
- Fixed N/M keys on Platinum IIe and IIgs
Documentation notes, nw
Merge git://git.redump.net/mame