Add new "checksource" target to the library makefiles, for automated source file existance checking.

Fixed compile error when FIXED_CONTROL_ENDPOINT_SIZE compile time option was disabled, and a USE_*_DESCRIPTORS compile time option was not enabled on the AVR8s.

Add C++ compatibility to some header files currently missing extern "C" linkage.

Make HIDReportViewer project show the IN, OUT and DATA report sizes as both bits and (rounded) bytes.

Make the HID Report Parser Get/Set Report Item routines fail if a NULL pointer to a report item is given.

Minor visual enhancement to the HIDReportViewer project.

Remove HID parser information output from the Low Level Host applications using the HID Report parser to simplify them, as this information can now be obtained using the new HIDReportViewer project when required.

Code style fixes for the Device mode USB Audio Class driver to make it more in line with the style of the other library Device Class drivers.

Add missing project files for the new HIDReportViewer project to upgrade its status to a finished (working) project.

Move the HIDReportViewer project into the normal Projects/ folder and out of the Incomplete/ projects folder.

Rename new Audio class driver functions, callbacks and events to ensure that they contain the USB mode (Device or Host) in the function names.

Add macro guards to the templated C files to prevent compile errors if they are mistakenly compiled as regular source files in a LUFA project.

Rename Audio Host Class driver internal descriptor matching routines to be in line with the rest of the class driver function names.

Ensure that only the requested Audio class pipes are mapped to endpoints within the device for a specific Audio Host Class driver instance.

Fix const-correctness of the Audio Host Class driver.

Correct errors in the existing Audio demo description files due to the new demo features (variable sampling rate vs. a fixed sampling rate).

Fix errors in the new Audio Host mode Class Driver, which would have prevented data from being sent or received properly by the device.

Add microphone/square wave generation compile time switch to the Low Level AudioOutput Host demo.

Pipe_BoundEndpointNumber() has been renamed to Pipe_GetBoundEndpointAddress(), and now returns the correct endpoint direction as part of the endpoint address.

Add Audio_GetSetEndpointProperty() function to the Host mode Audio class driver.

Remove warnings in the documentation for the library class drivers about sequential pipe/endpoint allocation, as by default this is no longer as issue (unless ORDERED_EP_CONFIG is specified).

Added new EVENT_Audio_StreamStartStopChange() event to the Audio Device Class driver to detect stream start/stop events.

Partial commit: Rename USBFOO LED driver to fix capitalisation of file name, which will cause issues on *nix systems.

Partial commit: Rename USBFOO LED driver to fix capitalisation of file name, which will cause issues on *nix systems.

Update incomplete Host mode Audio demos to use the correct class driver Endpoint Sampling Frequency Control value constant.

Remove custom PIDs on the Class Driver Audio device demos and revert back to the original Audio PIDs, as the low level and class driver demo versions are now descriptor compatible once again.

Massive corrections to the project documentation and code comments, thanks to Russian translation services provided by Andrey from Microsin.ru.