Merge pull request #5 from Tasssadar/master

EEPROM byte write should return ACK
Fixed register clobber in get_2bytes
Merge branch 'master' of github.com:alexforencich/xboot
Remove bashisms from config.h.mk

Signed-off-by: Vojtech Bocek <vbocek@gmail.com>
Merge branch 'rm_bashisms'