Programs to find out key codes needed for Hatari keymap files:

keytest.prg -- Atari program to show Atari keycode for pressed key
checkkeys   -- SDL program to print pressed SDL keys codes
listkeys    -- SDL program to list SDL scancodes & keycodes

Sources for first (keytest.*) can be compiled with AHCC from:
	https://docs.dev-docs.org/htm/search.php?find=AHCC

Sources for last two can be compiled with make & gcc on PC.
