The Logitech G15 v2 keyboard only has 6 G-keys instead of 18. On this keyboard, G15macro treats the left super key as the G17 key.
This patch adds a command line switch --second (-2) that changes this behaviour. It changes the function change_keymap to only remap 6 G-keys.
It also includes a different table of scancodes for the multimedia keys as these are different( at least on my keyboard, someone should check these), which is used when the --second command line switch is used.