FTBFS: cp: cannot stat ‘doc/screen.info-1’: No such file or directory

Excerpts from buildlog on saucy/amd64:
[...]
/usr/bin/make CFLAGS+='-O2 -g -Wall -Wextra -Wno-unused-parameter -Wno-missing-field-initializers' -C doc
make[1]: Entering directory `/home/ubuntu/screen-4.0.3/doc'
makeinfo --split 50000 ./screen.texinfo -o screen.info
makeinfo: warning: 50000 is not a valid split possibility
makeinfo: warning: ignoring splitting for format Info
make[1]: Leaving directory `/home/ubuntu/screen-4.0.3/doc'
touch build-stamp
[...]
dh_installman || true
dh_installinfo
cp: cannot stat ‘doc/screen.info-1’: No such file or directory
cp: cannot stat ‘doc/screen.info-2’: No such file or directory
cp: cannot stat ‘doc/screen.info-3’: No such file or directory
cp: cannot stat ‘doc/screen.info-4’: No such file or directory
cp: cannot stat ‘doc/screen.info-5’: No such file or directory
dh_installinfo: cp doc/screen.info doc/screen.info-1 doc/screen.info-2 doc/screen.info-3 doc/screen.info-4 doc/screen.info-5 debian/screen/usr/share/info returned exit code 1
make: *** [binary-arch] Error 1
dpkg-buildpackage: error: fakeroot debian/rules binary gave error exit status 2

screen was last built for Ubuntu in quantal; since then Ubuntu has moved to a new version of texinfo upstream which no longer supports the size-based splitting. Changelog suggests this is just rarely used anymore.