More sane Model 2 video refresh rates (read: copied from System 24, which makes sense at the end of the day)
Submit for regression test.
Naomi: documentation update [f205v]
a2bus_device and a2eauxslot_device: converted to devcb2 (nw)
converted i8255 to devcb2. nw.

p.s. I tested several games/systems and I triple checked the diff to be sure I did not 
make any copy and paste mistake in the 195 files touched by this, but let me know 
if any system suddenly stops working!
(MESS)-thomson: fix for incorrect palettes in a seldom used video mode [Antonie Mine]

(MESS)-hp48: fix for memory cards and addition of imgtool support for it [Antonie Mine]
Fixed compile. (nw)
reverting to classic ui due to lot of issues, as much as I hate reverting some else code (nw)
converted i8271 to use inline configs and reduced tagmap lookups
while at it. nw.
modernized nvram (nw)
modernized cybiko nvram and supported all models (nw)
Merge git://git.redump.net/mame