HHKB scan matrix: fix wait time on power on

Add command console and mouseky parameters tweak.

Add Mousekey parameters and accel keys.

Fix commands

Fix use of default_layer

Fix layer switching and host API.

Add subset of Xorg MouseKey acceleration parameters.

Fix build option MOUSEKEY_ENABLE.

Clean host.h interface.

Add keycode.h and remove usb_keycodes.h.

Add consumer/system usage support.

Add repeating of Fn key with alt keycode.

changes function name keyboard_proc to keyboard_task

Initial version of new code for layer switch is added.

Fix: Makefile

Fix MCU name macro in bootloader.c.

ADB conveter uses plain vanila keymap now.

Merge pull request #8 from JeffreySung/master

Apple IIgs(A9M0330)/Standard(M0116) keyboard

Fix PS/2 protocol build options

Debounce bug fixed