update swig on windows

winx64/bin/swigwin-4.0.0/Examples/test-suite/lua/import.lua

@@ -0,0 +1,28 @@
+-- import
+-- the lua 5.0 loading mechanism is rather poor & relies upon the loadlib() fn
+-- the lua 5.1 loading mechanism is simplicity itself
+-- for now we need a bridge which will use the correct version
+
+function import_5_0(name)
+	-- imports the file into the program
+	-- for a module 'example'
+	-- this must load 'example.dll' or 'example.so'
+	-- and look for the fn 'luaopen_example()'
+	if rawget(_G,name)~=nil then return end -- module appears to be loaded
+		
+	local lib=loadlib(name..'.dll','luaopen_'..name) or loadlib(name..'.so','luaopen_'..name)
+	assert(lib,"error loading module:"..name)
+	
+	lib() -- execute the function: initialising the lib
+	assert(rawget(_G,name)~=nil,"no module table found")
+end
+
+function import_5_1(name)
+	require(name)
+end
+
+if string.sub(_VERSION,1,7)=='Lua 5.0' then
+	import=import_5_0
+else
+	import=import_5_1
+end