package: add lesstif

This is a quite old thing, latest version is from 2009
but it is useful to applications based on xmotif.
It has been tested with buildroot on ARM/iMX6.

[Peter: pass --no-recursion to not error out in test/configure]
Signed-off-by Thierry Bultel <thierry.bultel@wanadoo.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>