proxyfuncs.go
func MakeChan(L *lua.State) int {
	n := L.OptInteger(1, 0)
	ch := make(chan interface{}, n)
	makeValueProxy(L, reflect.ValueOf(ch), cChannelMeta)
	return 1
}
func MakeChan(L *lua.State) int {
	n := L.OptInteger(1, 0)
	ch := make(chan interface{}, n)
	makeValueProxy(L, reflect.ValueOf(ch), cChannelMeta)
	return 1
}
// MakeChan creates a 'chan interface{}' proxy and pushes it on the stack.
//
// Optional argument: size (number)
//
// Returns: proxy (chan interface{})