Fixed an ass-load of compile errors, implemented PING(), resolved some dependency issues, fixed the struct mess. Ping is mildly incorrect (only sends signal instead of start, signal, stop), fixing now. also broke some stuff because usart_receive() is being used instead of interrupts. Will be fixed shortly.
Fixed ping. Using txq now, Also fixed some comments. yay.
Merge pull request #8 from asr1/master

Pull of Alex and Flavia's initial work on reading from bluetooth.