Enhance TemperatureDatalogger project -- add RTC capabilities so that data is logged along with the current time and date. Make logging interval configurable, set by a C# PC host application.

Added new stream creation function to the CDC Class drivers, to easily make standard streams from CDC Class driver instances.

Make unfinished device mode applications use the VID/PID reserved for LUFA development devices.

Changed Still Image Host class driver to auto-fill TransactionID element of sent headers depending on the current session state.

CDC based demos and project now work under 64 bit versions of Windows (thanks to Ronny Hanson, Thomas Bleeker).

The Benito Programmer project now has its own unique VID/PID pair allocated from the Atmel donated LUFA VID/PID pool.

Redocumented all device demos, now that they have changed over to the new USB class drivers.

Added C linkage to class drivers for C++ support.

Added prefixes to most of the class driver constants to prevent name clashes.