[arch-dev-public] [signoff] shadow 4.1.2.1

[Aaron Griffin]

I made some minor changes to shadow, and renamed some files in
addition to the version bump.

One important thing to note is that it apparently can't build shared
anymore. I do now know if this breaks anything (libshadow)... if it
does I will try to hack on it and get it to work, but actually I'm a
little more comfortable with static binaries for this stuff anyway.

Please test, and criticize. If someone can build for x86_64, that'd be
appreciated too.

Thanks,
Aaron
:wq