Fix #36: compilation error on MinGW

for compilation error on mingw (windows environment)

mk_ide_pkg.pl

@@ -24,24 +24,25 @@ sub build_system_src
 	(my $outpath)=@_;
 
 	my @source_list=(
-		"driver/chip/mt7687/inc/",
-		"driver/chip/inc/",
-		"driver/CMSIS/Device/MTK/mt7687/Include/",
-		"driver/CMSIS/Include/",
+		"driver/chip/mt7687/inc",
+		"driver/chip/inc",
+		"driver/CMSIS/Device/MTK/mt7687/Include",
+		"driver/CMSIS/Include",
 		"kernel/service/inc",
-		"kernel/rtos/FreeRTOS/Source/include/",
-		"kernel/rtos/FreeRTOS/Source/portable/GCC/ARM_CM4F/",
-		"middleware/third_party/lwip/src/include/",
-		"middleware/third_party/lwip/ports/include/",
+		"kernel/rtos/FreeRTOS/Source/include",
+		"kernel/rtos/FreeRTOS/Source/portable/GCC/ARM_CM4F",
+		"middleware/third_party/lwip/src/include",
+		"middleware/third_party/lwip/ports/include",
 		"middleware/third_party/mbedtls/include",
 		"middleware/third_party/mbedtls/configs",
 		"middleware/third_party/httpclient/inc",
 		"middleware/MTK/wifi_service/combo/inc",
-		"middleware/MTK/bluetooth/inc/",
-		"middleware/MTK/nvdm/inc/",
-		"middleware/MTK/connsys/inc/",
-		"prebuilt/middleware/MTK/nvdm/inc/",
-		"prebuilt/middleware/MTK/bluetooth/inc/",
+		"middleware/MTK/bluetooth/inc",
+		"middleware/MTK/nvdm/inc",
+		"middleware/MTK/dhcpd/inc",		
+		"middleware/MTK/connsys/inc",
+		"prebuilt/middleware/MTK/nvdm/inc",
+		"prebuilt/middleware/MTK/bluetooth/inc",
 		);
 
 	my @remove_list=("driver/chip/mt7687/inc/wifi.h");