Unsupported type

For the AVR32u4, "extern const prog_uchar afsk_sine_table[]" -> prog_uchar is unsupported in newer IDE. Switched to uint8_t and its working fine. 
I also only was able to modulate FSK using Timer1, I saw the inline comment to remove it, but the #Define should probably be left for now if others have the same issue (Timer4 wouldn't give me any FSK output)
