To Do
=====
Detach
Re-attach
Bold
Colour
Steady state changes
mag glass mode
screen compat commands
get rid of ww on var names
get rid of baud rate stuff
good high-level window primitives

Done
====
Move defs.h static funcs to lcmd.c
64-bit counters
macros to upper case
good name for winprog (winvars)
real types everywhere
put on Mac OS X
Move everything to winvars_t
pass winvars down
