Added hardware board driver support for the PJRC Teensy line of USB AVR boards.

Fix Doxygen configuration files' input file exclusion filters.

Add new TemperatureDataLogger project, a simple USB Mass Storage class Temperature Data Logger using the onboard Dataflash and Temperature sensor.

Add LEDNotifier project to the Projects folder build list. Add new LEDMixer C# host application for the LEDNotifier project.

Moved USBtoSerial demo the Projects directory, as it is simply an expanded CDC demo. Added const qualifier to Endpoint/Pipe stream write routines.

Partial Commit: Remove now empty Projects\Incomplete directory and add the new AVRISP project to the Projects directory makefile.

Fixed invalid data being returned when a GetStatus request is issued in Device mode with an unhandled data recipient.

Fix up Programmers Notepad Project file to show new Projects directory layout. Remove now moved AVRISP project from the Projects directory makefile.

Added new Endpoint_SetEndpointDirection() macro to set the current endpoint direction for bidirectional endpoints.

Renamed internal USB_INT_ENDPOINT_SETUP macro to USB_INT_RXSTPI to fit in with the rest of the interrupt vector macros.

Added new Benito project, a simple modified USB-to-Serial bridge for the programming of AVRs using the official Arduino bootloader.

Oops - restore deleted MissileLauncher project, fix all spelling errors for "missile". TODO: Learn how to actually spell.

Break device mode class driver interfaces into seperate config and state structs which are then combined, for clarity. Move device mode class driver interfaces back into the device mode class driver headers from the common class headers to make room for host class interfaces.

Add MissleLauncher project to the /Projects/ makefile. Add missing MissleLauncher Doxygen.conf file.

Corrections to Keyboard demo.

Removed AVRISP_Programmer project due to code quality concerns.