Update driver INF files - change manufacturer name from the original template's name to the Four Walled Cubicle website.

Fix Doxygen configuration files' input file exclusion filters.

Add new HotmailNotifier project, which changes a LED's colour based on the user's unread email count as sent from Windows Live Messenger.

Fix project text files to refer to "project" instead of "demo".

Add double banking property to LUFA powered projects in the Projects directory. Add guards to macro parameters to ensure that formulas passed as parameters don't mess up the internal macro structure.

Moved USBtoSerial demo the Projects directory, as it is simply an expanded CDC demo. Added const qualifier to Endpoint/Pipe stream write routines.