update swig on windows

winx64/bin/swigwin-4.0.0/Examples/csharp/callback/Makefile

@@ -0,0 +1,21 @@
+TOP        = ../..
+SWIGEXE    = $(TOP)/../swig
+SWIG_LIB_DIR = $(TOP)/../$(TOP_BUILDDIR_TO_TOP_SRCDIR)Lib
+CXXSRCS    = example.cxx
+TARGET     = example
+INTERFACE  = example.i
+SWIGOPT    =
+CSHARPSRCS = *.cs
+CSHARPFLAGS= -nologo -debug+ -out:runme.exe
+
+check: build
+	$(MAKE) -f $(TOP)/Makefile SRCDIR='$(SRCDIR)' csharp_run
+
+build:
+	$(MAKE) -f $(TOP)/Makefile SRCDIR='$(SRCDIR)' CXXSRCS='$(CXXSRCS)' \
+	SWIG_LIB_DIR='$(SWIG_LIB_DIR)' SWIGEXE='$(SWIGEXE)' \
+	SWIGOPT='$(SWIGOPT)' TARGET='$(TARGET)' INTERFACE='$(INTERFACE)' csharp_cpp
+	$(MAKE) -f $(TOP)/Makefile SRCDIR='$(SRCDIR)' CSHARPSRCS='$(CSHARPSRCS)' CSHARPFLAGS='$(CSHARPFLAGS)' csharp_compile
+
+clean:
+	$(MAKE) -f $(TOP)/Makefile SRCDIR='$(SRCDIR)' csharp_clean