Use the framework provided GlobalInterruptEnable() function instead of the AVR8/XMEGA specific sei() macro, for future demo/project portability.

Upgrade Doxygen configuration files, custom style CSS and DOXYGEN build module for the latest Doxygen release.

Add help text to the project makefiles to help new users get information on the improved build system.

Rename build system module makefiles from "lufa.MODULE.in" to "lufa_MODULE.mk" to prevent makefile from assuming the include is an old style build rule, slowing down the build process.

Prevent the BUILD module from shell-executing multiple processes to determine the avr-size flags to speed up the build, unless the size rule is invoked.

Add warnings and set warnings as errors to the SingleUSBModeTest build test makefile.

Fix project makefiles - remove trailing slash from LUFA_PATH entries and the XPLAINBridge project AVRISP file include path to prevent build errors.

Add new ATPROGRAM build system module. Add ATPROGRAM and CPPCHECK modules to all application makefiles.

Remove legacy AS4 project files, now that they can be automatically generated by the new maintenance script.

Upgrade Doxygen configuration files for Doxygen 1.8.1, fix broken stylesheet and footer HTML, add explicit spacing into documentation code fragments to prevent Doxygen from removing empty lines in the output.

Minor documentation adjustments to the demos, projects and bootloaders to ensure correct formatting of application device support.

Update project Doxygen and makefiles so that the resulting project documentation hides the unused version value, and uses the same HTML CSS stylesheet as the library core.

AppConfigHeaders: Make sure that in applications using an AppConfig.h configuration file, all application headers include the configuration file.

AppConfigHeaders: Move out the last of the demo/app configurations into new AppConfig.h header files.

AppConfigHeaders: Switch class driver Device mode demos to use LUFAConfig.h configuration header files.

Add branch for the conversion of demos to use standard C header files for configuration, rather than makefile defined macros.

Increased endpoint polling interval for all demos and projects to 5ms, as 1ms was causing some enumeration issues on some machines (thanks to Riku Salminen).

Make Doxygen fail for any Doxygen output other than unsupported tags (as these are somewhat benign).

Improve exclusion list for the main library export_tar rule to exclude any compiled library files from the export.

USB_CONFIG_ATTR_BUSPOWERED constant renamed to USB_CONFIG_ATTR_RESERVED, as this was misnamed (thanks to NXP Semiconductors).

Run wspurify script on /trunk/ and /branches/ C source files, to remove any trailing whitespace at the end of each line.

Added Class, ClassDevice, ClassHost and ClassCommon to the internal class driver source filenames to prevent ambiguities.

Add missing SVN eol-style property to ensure that source code line endings and converted to the native values on checkout.

Fix additional warnings under GCC 4.6.

Removed the ENDPOINT_DESCRIPTOR_DIR_* macros in favour of the shorter ENDPOINT_DIR_* macros, which can now be used with both Endpoint_ConfigureEndpoint() and in the device descriptors.

Fixed error in the pipe unordered allocation algorithm for the AVR8 devices breaking compatibility with some devices.

Add endianness information to the class driver and core structure definitions.

Move out the unused Ethernet_Frame_Info_t structure definition to the RNDIS device demos where it is needed.