Function memx_cdy::memx_init

#[no_mangle]
pub extern "C" fn memx_init()

This is the dummy function fot the easy linking.

This memx_init() function do nothing. However, links are simplified.

Example:

In your binary package, the main function is like this.

fn main () {
    memx_cdy::memx_init(); // fast mem operation.
}

In your library package, good with any function.

fn xxx_func () {
    memx_cdy::memx_init(); // fast mem operation.
}