wip/tinylogin 1.4 NetBSD

TinyLogin is a suite of tiny Unix utilities for handling logging into, being authenticated by, changing one's password for, and otherwise maintaining users and groups on an embedded system.

It also provides shadow password support to enhace system security. TinyLogin is, as the name implies, very small, and makes an excellent complement to BusyBox on an embedded system (though it can of course be used without).