UPNP support from windows

Makefile.mingw

@@ -32,6 +32,11 @@ ifeq ($(USE_WIN32_APP), yes)
 	DAEMON_OBJS += $(patsubst %.rc,obj/%.o,$(DAEMON_RC))
 endif
 
+# UPNP Support 
+ifeq ($(USE_UPNP),1)
+  CXXFLAGS += -DUSE_UPNP
+endif
+
 ifeq ($(USE_AESNI),1)
 	CPU_FLAGS = -maes -DAESNI
 else

UPnP.cpp

@@ -69,7 +69,7 @@ namespace transport
 #ifdef MAC_OSX
             m_Module = dlopen ("libminiupnpc.dylib", RTLD_LAZY);
 #elif _WIN32
-            m_Module = LoadLibrary ("miniupnpc.dll"); // official prebuilt binary, e.g., in upnpc-exe-win32-20140422.zip
+            m_Module = LoadLibrary ("libminiupnpc.dll"); // from MSYS2
 #else
             m_Module = dlopen ("libminiupnpc.so", RTLD_LAZY);
 #endif