Since ncurses also defines COLOR_BLACK and friends, and we want
to avoid including curses.h in contiki-conf.h, define CTK_COLOR_*
constants and map them to curses colors in ctk-curses.c.
It was added to avoid getting garbage keyboard input in some cases,
however it seems not to happen very often and might be the cause
of hang in OSX. If garbage input happens again we can always try
to pump a single event each time instead of looping anyway.
* Cleanup
* Fix warnings
* Fix indentation
* Only wait 1ms for keyboard timeout
* Hide text cursor
* Pump mouse events just in case
* Add F9 as menu key since F10 is used as menu trigger by Gnome
