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>

Switched dead URLs to new upstream.

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

During 4.2.1 version update support for subordinate IDs has been
disabled. It was handled by:

1) Adding --disable-subordinate-ids to avoid:
configure: error: cannot run test program while cross compiling

2) Adding patch 003-fix-disabling-subids.patch to avoid:
usermod.c: In function 'process_flags':
usermod.c:1364:10: error: 'vflg' undeclared (first use in this function)
  if (   (vflg || Vflg)
          ^

This commit adds a patch with a proper configure.in fix. We don't need
to disable subordinate IDs anymore.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>

Signed-off-by: Pelle Johnsen <pelle.johnsen@gmail.com>