All comments in the library, bootloaders, demos and projects have now been spell-checked and spelling mistakes/typos corrected.

Changed GenericHID device demo to use the LUFA scheduler, added INTERRUPT_DATA_ENDPOINT and INTERRUPT_CONTROL_ENDPOINT compile time options.

Corrections to the KeyboardHost and MouseHost demos' pipe handling to freeze and unfreeze the data pipes at the point of use.

Fixed Still Image Host SImage_SendData() function not clearing the pipe bank after sending data.

Corrected bitfields -- the smallest datatype required for each bitfield is now used, rather than relying on GCC to truncate unused bytes in bitfields (thanks to Walt Sacuta).

Seperated out OTG, Device and Host mode demos into seperate folders for clarity. Adjusted makefiles so that the path to the LUFA library can be set in one place.