[gentoo-catalyst] Install of shadow fails during building stage2

[Graham Murray <gmurray@webwayone.co.uk>]

As part of the process of building a stage4, I have successfully built
stage1 but the stage2 build is failing on the install phase of
sys-apps/shadow. Unfortunately I cannot see what it is that is failing
to install. The last few lines from the catalyst run are:-

Libtool: install: /usr/bin/install -c useradd /var/tmp/portage/sys-apps/shadow-4.1.4.3/image//usr/sbin/useradd
libtool: install: /usr/bin/install -c userdel /var/tmp/portage/sys-apps/shadow-4.1.4.3/image//usr/sbin/userdel
libtool: install: /usr/bin/install -c usermod /var/tmp/portage/sys-apps/shadow-4.1.4.3/image//usr/sbin/usermod
libtool: install: /usr/bin/install -c vipw /var/tmp/portage/sys-apps/shadow-4.1.4.3/image//usr/sbin/vipw
make[2]: Leaving directory `/var/tmp/portage/sys-apps/shadow-4.1.4.3/work/shadow-4.1.4.3/src'
ln -sf newgrp   /var/tmp/portage/sys-apps/shadow-4.1.4.3/image//usr/bin/sg
ln -sf vipw     /var/tmp/portage/sys-apps/shadow-4.1.4.3/image//usr/sbin/vigr
for i in su; do \
        chmod -f 4711 /var/tmp/portage/sys-apps/shadow-4.1.4.3/image//bin/$i; \
done
make[1]: *** [install-am] Error 1
make[1]: Leaving directory `/var/tmp/portage/sys-apps/shadow-4.1.4.3/work/shadow-4.1.4.3/src'
make: *** [install-recursive] Error 1
emake failed
 * ERROR: sys-apps/shadow-4.1.4.3 failed (install phase):
 *   install problem