Move unfinished SideShow source files to nested Lib directory for clarity.

Demos/Device/Incomplete/Sideshow/makefile

@@ -135,10 +135,10 @@ LUFA_OPTS += -D USE_STATIC_OPTIONS="(USB_DEVICE_OPT_FULLSPEED | USB_OPT_REG_ENAB
 # List C source files here. (C dependencies are automatically generated.)
 SRC = $(TARGET).c                                                 \
 	  Descriptors.c                                               \
-	  SideshowCommon.c                                            \
-	  SideshowCommands.c                                          \
-	  SideshowApplications.c                                      \
-	  SideshowContent.c                                           \
+	  Lib/SideshowCommon.c                                        \
+	  Lib/SideshowCommands.c                                      \
+	  Lib/SideshowApplications.c                                  \
+	  Lib/SideshowContent.c                                       \
 	  $(LUFA_PATH)/LUFA/Drivers/USB/LowLevel/DevChapter9.c        \
 	  $(LUFA_PATH)/LUFA/Drivers/USB/LowLevel/Endpoint.c           \
 	  $(LUFA_PATH)/LUFA/Drivers/USB/LowLevel/Host.c               \