Use -pedantic compile time option to find and correct several minor code errors.

.../Host/Incomplete/BluetoothHost/Lib/BluetoothHCICommands.c

Demos/Host/LowLevel/PrinterHost/Lib/PrinterCommands.c

Demos/Host/LowLevel/PrinterHost/PrinterHost.c

LUFA/DriverStubs/Joystick.h

LUFA/Drivers/Board/BUMBLEB/Joystick.h

LUFA/Drivers/Board/EVK527/Joystick.h

LUFA/Drivers/Board/STK525/Joystick.h

LUFA/Drivers/Board/STK526/Joystick.h

LUFA/Drivers/Board/USBKEY/Joystick.h

LUFA/Drivers/USB/Class/Host/Printer.c

LUFA/Drivers/USB/HighLevel/ConfigDescriptor.h

LUFA/Drivers/USB/LowLevel/Host.c

LUFA/Drivers/USB/LowLevel/Pipe.h

Projects/AVRISP/Lib/PDIProtocol.c

Projects/AVRISP/Lib/PDITarget.c

Projects/AVRISP/Lib/PDITarget.h