More XMEGA USB core fixes.

Rename the Doxygen page source directory from ManPages/ to DoxygenPages/ to prevent user confusion with the actual *nix Man tool.

Pull out architecture specific macros and other definitions into a new common header file. Add new JTAG_DISABLE() macro for the AVR8s to software-disable JTAG debugging using cycle-safe assembly code.

Add Binary Page Mode fuse command bytes to the AT45DB642D.h Dataflash header.

Update UC3 platform driver support to use the bitmasks defined in the header files over raw constants.

Start implementation of XMEGA platform drivers.

Fix duplicated LED driver functions in the Doxygen documentation.

Tighten up the implementations of the USB_Device_SetDeviceAddress(), USB_Controller_Reset() and USB_PLL_On() functions for the AVR8 devices.

Minor corrections to the documentation of the USB_Control_Request_t enum.

Pull out Android Accessory Mode functions into a seperate set of files in the incomplete Android Accessory Mode Host demo. Improve Android Accessory Mode protocol support to correctly query the device's supported protocol and send the approriate device information strings.

Update AudioInput and AudioOutput Class Driver device mode demos to use a switch statement when selecting the audio request type for clarity.

Fix inverted LEDs_GetLEDs() result for the EVK1100 and EVK1101 boards.

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

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

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.

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

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

Added missing Audio class control request definitions.

Added support for the Audio class GET STATUS request so that it is correctly ACKed when sent by the host.

Fix incorrect project name in the Projects/ folder makefile.

Add new MediaController project, a simple Media Playback control manipulator (Play/Pause/Next Track/Volume/etc.).

Add RNDIS Device support to the Webserver project, so that the files stored on the device can be viewed from a web-browser while the board is plugged into a host machine.

Add new RNDIS_Host_IsPacketReceived(), RNDIS_Device_ReadPacket() and RNDIS_Device_WritePacket() functions to the Device RNDIS Class Driver.

Modify RNDIS demos to suit the simplified Ethernet_Frame_Info_t structure.

Fixed possible invalid program execution when in host mode if corrupt descriptor lengths are supplied by the attached device.

Minor code cleanups to add const and reformat where missing, as well as abstract out the internal device signature start address into a macro, so that it can be altered to suit particular devices within a single architecture if needed.

Add missing documentation to the USB_Device_States_t enum.

Remove use of avr-libc specific ATOMIC_BLOCK, replace with a new per-architecture set of inline functions to retrieve and manipulate the global interrupt enable bit for each architecture.

Add in documentation for the USB controller common interrupt routine which must be linked to the interrupt controller in the user application on the AVR32 UC3 architecture.

Remove UC3B temp macros related to EEPROM, to ensure that projects requiring this break at compile time rather than at runtime until a solution can be found.