Moved out each demos' functionality library files (e.g. Ring Buffer library) to /Lib directories for a better directory structure.

Demos/Device/USBtoSerial/USBtoSerial.h

@@ -43,7 +43,8 @@
 		#include <avr/power.h>
 
 		#include "Descriptors.h"
-		#include "RingBuff.h"
+
+		#include "Lib/RingBuff.h"
 
 		#include <LUFA/Version.h>                         // Library Version Information
 		#include <LUFA/Drivers/USB/USB.h>                 // USB Functionality

Demos/Device/USBtoSerial/makefile

@@ -125,7 +125,7 @@ LUFA_PATH = ../../..
 # List C source files here. (C dependencies are automatically generated.)
 SRC = $(TARGET).c                                                 \
 	  Descriptors.c                                               \
-	  RingBuff.c                                                  \
+	  Lib/RingBuff.c                                              \
 	  $(LUFA_PATH)/LUFA/Scheduler/Scheduler.c                     \
 	  $(LUFA_PATH)/LUFA/Drivers/USB/LowLevel/DevChapter9.c        \
 	  $(LUFA_PATH)/LUFA/Drivers/USB/LowLevel/Endpoint.c           \