update swig on windows

winx64/bin/swigwin-4.0.0/Examples/lua/constants/runme.lua

@@ -0,0 +1,35 @@
+-- file: example.lua
+
+---- importing ----
+if string.sub(_VERSION,1,7)=='Lua 5.0' then
+	-- lua5.0 doesn't have a nice way to do this
+	lib=loadlib('example.dll','luaopen_example') or loadlib('example.so','luaopen_example')
+	assert(lib)()
+else
+	-- lua 5.1 does
+	require('example')
+end
+
+print("ICONST  = "..example.ICONST.." (should be 42)")
+print("FCONST  = "..example.FCONST.." (should be 2.1828)")
+print("CCONST  = "..example.CCONST.." (should be 'x')")
+print("CCONST2 = "..example.CCONST2.." (this should be on a new line)")
+print("SCONST  = "..example.SCONST.." (should be 'Hello World')")
+print("SCONST2 = "..example.SCONST2.." (should be '\"Hello World\"')")
+print("EXPR    = "..example.EXPR.." (should be 48.5484)")
+print("iconst  = "..example.iconst.." (should be 37)")
+print("fconst  = "..example.fconst.." (should be 3.14)")
+
+-- helper to check that a fn failed
+function checkfail(fn)
+	if pcall(fn)==true then
+		print("that shouldn't happen, it worked")
+	else
+		print("function failed as expected")
+	end
+end
+
+-- these should fail
+-- example.EXTERN is a nil value, so concatentatin will make it fail
+checkfail(function() print("EXTERN = "..example.EXTERN) end)
+checkfail(function() print("FOO = "..example.FOO) end)