OpenBench Logic Sniffer 2.1 major update.

An update that fixes many of the early issues with the OpenBench Logic sniffer is now available for download.
The changes include:
-The communications between the FPGA and the PIC microcontroller were changed from UART to SPI for greater speed and reliability.
-The Java client has an option to select either the outside or inside numbering scheme on the fly.
-The Java client now remembers the last position while zooming. (Thanks to a patch from Markus Baertschi)