Disable strict aliasing explicitly in the project makefiles, as this is apparently enabled by default in newer AVR-GCC builds, and aliasing is used heavily for type-punning through the LUFA and third party library's codebase.

Demos/Device/Incomplete/Sideshow/makefile

@@ -219,6 +219,7 @@ CFLAGS += -ffunction-sections
 CFLAGS += -fno-inline-small-functions
 CFLAGS += -fpack-struct
 CFLAGS += -fshort-enums
+CFLAGS += -fno-strict-aliasing
 CFLAGS += -Wall
 CFLAGS += -Wstrict-prototypes
 CFLAGS += -Wundef