This update for pam fixes the following issues:

- Check if the password is part of the username. (jsc#SLE-16719, jsc#SLE-16720)
- Check whether the password contains a substring of of the user's name of at least `` characters length in
some form. This is enabled by the new parameter `usersubstr=`

This update was imported from the SUSE:SLE-15:Update update project.