cgui: Regenerate with latest fbfrog
cgui: Remove CGUI_PRINTFUNC and cgui_va_arg_p too
ffi: Regenerate with latest fbfrog
llvm: Translate using fbfrog's new stdbool.h

Otherwise bool wouldn't be handled anymore.
ncurses: Translate with stdbool.h
ncurses/pdcurses: Only translate curses.h, like fbc's current header

ncurses term.h depends on termios.h which fbc doesn't have translated yet.
pdcurses: Remove #define NULL
ncurses: Drop "fake" functions

In ncurses' curses.h, many functions are marked as "generated" instead of
"implemented". It seems like ncurses implements all such functions as
macros already, and only provides the function declarations for standard
compatibility reasons. For FB we probably don't need them either way, since
we have the macros already. This way we also avoid a lot of symbol conflict
issues. fbc's current ncurses headers has these functions commented out.
ncurses: Don't remove NCURSES_CAST
raw: Regenerate with latest fbfrog