set, background color/foreground color should be set to white/black,
when doing bitblt operation with the bitmap mask.

Add some more Escape -> Escape16 conversions.

GetMenu16 can just call GetMenu.

- some of the checks for invalid items where > when they should have been >=
  (Marcus Meissner)
- made InsertItem behave similarly to DeleteItem, ie, if the current item is
  after where the item is inserted, increment the selected item (David Luyer)

Remove relays for win16drv from CallBack table, instead use build to
generate them directly in graphics/win16drv/prtdrv.c.
If Printer AbortProc is 16bit then allocate thunk and store that as a
32bit proc in DC.  Setting of abortprocs now done in the correct place
(i.e. not in the driver).

scrollbars, enable both.