Fix action macros

Merge branch 'keymap_section'

Add build option KEYMAP_SECTION for keymap editor

Add version string

Add ld script for keymap section

Change Makefile and port setting

- Makefile use LUFA now
- Change MCU ports PF{0,1} to PD{0,1}
- Add build option for keymap to Makefile: make keymap=hasu

Fix tapping count over flow(issue #52)

Merge branch 'lufa_nkro'

Change README Makefile and config.h in hhkb

Add NKRO support for LUFA

Merge branch 'bootmagic_salt'(Fix issue #41)

Add bootmagic salt key to avoid accidental configuration

Merge branch 'lockkey_fix'(Fix issue #46)

Add mechanical locking switch support for NumLock and ScrollLock

Merge branch 'macro_mediakey'(Fix issue #42)

Add support for macro media/system keys

Merge branch 'bob_fix'

Cancel tapping when interrupted by other key

Change name ACT_LAYER_TAP1 to ACT_LAYER_TAP_EXT

Add compile conditional for assembler(xprintf)