Macro make_handle_static

macro_rules! make_handle_static {
    (
        dir_1: $dir_1:expr,
        $(dir_2: $dir_2:expr,)?
        prod_base_path: $prod_base_path:expr,
        dev_base_path: $dev_base_path:expr$(,)?
    ) => { ... };
}

Generates a handle_static function that serves static content for HTTP servers. Expects three arguments: an include_dir::Dir object where the static content is served, and two strings representing the (crate-local) paths to the production and development static files.