Don't compile in ISP sources into the XPLAIN bridge project.

Projects/XPLAINBridge/makefile

@@ -21,9 +21,10 @@ F_USB        = $(F_CPU)
 OPTIMIZATION = s
 TARGET       = XPLAINBridge
 SRC          = $(TARGET).c Lib/SoftUART.c USARTDescriptors.c $(AVRISP_PATH)/AVRISPDescriptors.c $(AVRISP_PATH)/Lib/V2Protocol.c \
-               $(AVRISP_PATH)/Lib/V2ProtocolParams.c $(AVRISP_PATH)/Lib/ISP/ISPProtocol.c $(AVRISP_PATH)/Lib/ISP/ISPTarget.c \
-               $(AVRISP_PATH)/Lib/XPROG/XPROGProtocol.c $(AVRISP_PATH)/Lib/XPROG/XPROGTarget.c $(AVRISP_PATH)/Lib/XPROG/XMEGANVM.c \
-               $(AVRISP_PATH)/Lib/XPROG/TINYNVM.c $(LUFA_SRC_USB) $(LUFA_SRC_USBCLASS)
+               $(AVRISP_PATH)/Lib/V2ProtocolParams.c \
+               $(AVRISP_PATH)/Lib/XPROG/XPROGProtocol.c $(AVRISP_PATH)/Lib/XPROG/XPROGTarget.c \
+               $(AVRISP_PATH)/Lib/XPROG/XMEGANVM.c $(AVRISP_PATH)/Lib/XPROG/TINYNVM.c \
+               $(LUFA_SRC_USB) $(LUFA_SRC_USBCLASS)
 LUFA_PATH    = ../../LUFA
 CC_FLAGS     = -DUSE_LUFA_CONFIG_HEADER -IConfig/ -I$(AVRISP_PATH)
 LD_FLAGS     =