AppConfigHeaders: Update bootloaders to use configuration header files, rather than makefile defines.

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

Alter the bootloader section sizes to all be 8KB, to be in line with the default AT90USB1287 fuses, as that is the default target MCU. Add instructions to the documentation to clarify this for the user (thanks to Georg Glock).

Added additional bootloader API data to expose the bootloader start address and class to the DFU and CDC class bootloaders.

Minor documentation fixes - change \note entries to \warning where appropriate and remove/update old documentation.

Add API support signature to the CDC and DFU class bootloaders, so that the application can detect the bootloader's API support.

Expand the documentation for each Bootloader to give sample usage instructions for the command line programmer utilities.

Fix typo in the HID class bootloader CLI programmer application usage instructions.

Documentation improvements - put driver example code into its own section, fix incorrect and missing section names.

Clarify in the project documentation files what the each of the different USB AVR device "series" comprises of.

More spell checking of all source files -- correct missed errors, switch to EN-GB spelling dictionary.

Add svn:eol-style property to source files, so that the line endings are correctly converted to the target system's native end of line style.

Fix up demo documentation device compatibility list to be as general as possible to reduce changes required as Atmel releases more devices within the same USB AVR series.

Add link to third-party signed version of the official FLIP DFU driver for 64-bit Windows OSes to the DFU bootloader readme file.

Add HTML anchor links to URLs in the documentation to ensure that they are rendered correctly in the generated documentation.

Documented FAST_STREAM_TRANSFERS compile time option.

Reduced the TCP window size for the RNDIS demos (Class and LowLevel) to make them compatible with the AT90USB64x.

Re-add signature byte defines to the DFU and CDC class bootloaders -- the SIGNATURE_x defines in the AVR device header files only exist in a newer version of avr-libc than is in the Debian repositories, causing build issues on Linux.

Added preprocessor checks and documentation to the bootloaders giving information about missing SIGNATURE_x defines due to outdated avr-libc versions.

Corrections to Keyboard demo.

Removed AVRISP_Programmer project due to code quality concerns.