Big rename: separate concepts of Transaction from Handle. - An application that uses PAM creates a Transaction. - The Transaction has a Handle. Currently, a module still get something called a "handle", but that's probably going to change soon.

#![allow(unexpected_cfgs)]

use libpam_sys_helpers::pam_impl;

fn main() {
    println!("cargo:rustc-link-lib=pam");
    pam_impl::enable_pam_impl_cfg();
}