Add AVRStudio 4 project files to the LowLevel Host mode demos.

Bootloaders/DFU/BootloaderDFU.aps

.../DualRole/ClassDriver/MouseHostDevice/MouseHostDevice.aps

Demos/Host/LowLevel/GenericHIDHost/GenericHIDHost.aps

...owLevel/JoystickHostWithParser/JoystickHostWithParser.aps

Demos/Host/LowLevel/KeyboardHost/KeyboardHost.aps

...owLevel/KeyboardHostWithParser/KeyboardHostWithParser.aps

Demos/Host/LowLevel/MIDIHost/MIDIHost.aps

Demos/Host/LowLevel/MassStorageHost/MassStorageHost.aps

Demos/Host/LowLevel/MouseHost/MouseHost.aps

...Host/LowLevel/MouseHostWithParser/MouseHostWithParser.aps

Demos/Host/LowLevel/PrinterHost/PrinterHost.aps

Demos/Host/LowLevel/RNDISEthernetHost/RNDISEthernetHost.aps

Demos/Host/LowLevel/StillImageHost/StillImageHost.aps

Demos/Host/LowLevel/VirtualSerialHost/VirtualSerialHost.aps

LUFA.pnproj

LUFA/ManPages/FutureChanges.txt