BTnut System Software 1.1. Release

The BTnut System Software is a complete rewrite of the former BTnode software package based on an Ethernut kernel (http://www.ethernut.de). This release adds full support for the BTnode Rev3 using a Zeevo Bluetooth Radio and contains a new BootLoader that allows to program BTnodes over a serial port (RS232 or USB-2-UART adapter) and by providing a new Flash Image in the exteneded SRAM.