Adjusted LCD Contrast range and changed stepping to 1
Updated LCD Contrast menu
Release 2.15.A - Initial version for new 8100 Alpha boards
Includes necessary hardware pin assignment changes
Updated reference voltage for processor A/D voltage reading
Changed voltage read algorith to read just once
Added in Debug port capability to Usart0 and init
Added in change to set USB VBOF for default Device mode operation
Updated ability to handle 485 Receiver enable/disable