psmisc-selinux: add libselinux dependency

Fix namcap error:
psmisc-selinux E: Dependency libselinux detected and not included
(libraries ['usr/lib/libselinux.so.1'] needed in files
['usr/bin/killall', 'usr/bin/pstree'])
shadow-selinux: add libsemanage dependency and fix license directory name

Fix namcap errors:
shadow-selinux E: Missing custom license directory (usr/share/licenses/shadow-selinux)
shadow-selinux E: Dependency libsemanage detected and not included
(libraries ['usr/lib/libsemanage.so.1'] needed in files
['usr/bin/usermod', 'usr/bin/useradd', 'usr/bin/userdel'])