decl_early_init() is called when we are starting a game. On first
start, it validates that global state is in the expected state.
When called on subsequent starts, it initializes global state to
expected state.
Fixed declarations of draw_classic, draw_vertical and draw_horizontal.
Moved definitions of locals before code. Added initialization of
locals. Changed comments to c-style.
There are two ways to enable curses in the build. Either set the
environment variable PDCURSES to a folder containing a PDCurses repository
OR place the PDCurses folder alongside the NetHack source repository.
Map back buffer work is done eliminating all flickering caused by
clears of the front buffer during partial updates.
Implemented a cursor blink in both ascii and tile modes.
Fixed bug where we would lose fit to screen when entering rogue level.
I was experimenting with some potential changes to menu searching but
have not been satisfied with the result. However, this bit of code
consolidation is worthwhile regardless of that.
Some of the items in NetHack.ad were separated from others by "!"
comment line rather than plain blank line and that tended to make it
look like the two items were directly related. For the ones which
aren't, remove '!'.
I also expanded some comments and reordered a couple of resources,
moving 'slow' closer to top and advanced 'translations' farther down.
appropriately.
Renamed ntassert to nhassert. (Naming mistake caused by using ntassert
at work).
Re-ordered a few more includes to get window headers included before
nethack headers.
Moved the code page 437 mapping table to winnt.c so that it could be
used in window and console clients.
Added check that fonts support unicode values we use from code page 437.
Use unicode to draw text if font supports it otherwise use ASCII.
