Only run bootloader handshake callback if sender_id == 0
Add updated nap_conf sources
Remove acq_channel.h and track_channel.h dependencies
Add nap_conf.o to list of objects in Makefile
Use lower half of serial number read from nap_flash as sender_id
Must set up SPI before reading from M25 flash
Use 42 for valid sender id, same as console uses
Console sender id is 0x42, not 42
Merge pull request #2 from cbeighley/master

v1.1 Bootloader