Added User Application APIs to the CDC and DFU class bootloaders.

Bootloaders/CDC/BootloaderAPI.c

Bootloaders/CDC/BootloaderAPI.h

Bootloaders/CDC/BootloaderAPITable.S

Bootloaders/CDC/BootloaderCDC.c

Bootloaders/CDC/BootloaderCDC.h

Bootloaders/CDC/BootloaderCDC.txt

Bootloaders/CDC/makefile

Bootloaders/DFU/BootloaderAPI.c

Bootloaders/DFU/BootloaderAPI.h

Bootloaders/DFU/BootloaderAPITable.S

Bootloaders/DFU/BootloaderDFU.c

Bootloaders/DFU/BootloaderDFU.h

Bootloaders/DFU/BootloaderDFU.txt

Bootloaders/DFU/makefile

LUFA.pnproj

LUFA/ManPages/ChangeLog.txt

LUFA/ManPages/ConfiguringApps.txt

LUFA/ManPages/MigrationInformation.txt

LUFA/Version.h