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

Revert the default DEBUG_LEVEL setting from 3 to 2, as this is apparently causing segfaults on some builds of binutils-avr.

Fix broken code sample section spacing in the Doxygen documentation due to a missing line-height CSS property.

Add hack to the XPLAINBridge project to allow it to compile even if an identical OBJDIR directory exists in the dependant AVRISP-MKII clone project folder.

Split out bootloader HEX generation into separate directories for each bootloader in the maintenance script.

Extend bootloader build test to include all supported configurations including the special XPLAIN board configuration and possible F_USB values.

Force the maintenance script to built bootloaders with F_USB values of 8MHz and 16Mhz - fix when additional architecture bootloaders are available.

Make the bootloader generation maintenance script copy over the project license text when generation is complete.

Add a "make_bootloaders" target to the Maintenance makefile, to generate all possible bootloaders and archive them for separate distribution.

Fixed endianess issues in the RNDIS host class driver for UC3 devices (thanks to Andrew Chu). Fix broken build for UC3 devices when ORDERED_EP_CONFIG compile time option is set.

Add DEBUG_FORMAT and DEBUG_LEVEL optional parameters to the BUILD module. Turn off generation of debug information when performing a validation build, and when running the build tests.

Use immediate variable expansion in the second-deepest level makefile scripts to prevent multiple evaluation of the PROJECT_DIRECTORIES variable.

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.

Rename hid-teensy and hid-teensy-ee targets to teensy and teensy-ee to be in line with the DFU module target names.

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

Override the OBJDIR setting for the XPLAINBridge project, as this currently doesn't work. Turn off check-config test in the StaticAnalysisTest build test to save time - if the standard build fails this can be run manually to determine the problem cause.

Mark build test makefiles as being incompatible with parallel make builds, as they re-use the same object directories.