Function mysql_real_connect

pub unsafe extern "C" fn mysql_real_connect(
    mysql: *mut MYSQL,
    host: *const c_char,
    user: *const c_char,
    passwd: *const c_char,
    db: *const c_char,
    port: c_uint,
    unix_socket: *const c_char,
    clientflag: c_ulong,
) -> *mut MYSQL