Fixed license information.

Removed patch requiring autoreconf and replaced with a configure variable.

Removed faulty patch that broke systems without a disabled crypt size hack.
Replaced with using a SED command as well as bcrypt, which works in musl.

Removed su patch and converted it to a SED command in the Makefile.

Added new shadow utilities.

Signed-off-by: Rosen Penev <rosenp@gmail.com>