Add \clist_use:Nnnn and related functions to 'stable'


git-svn-id: http://www.latex-project.org/svnroot/experimental/trunk@4498 de43f980-851b-0410-b2f7-c40aca1f87e0
Add \seq_use:Nnnn and related functions to stable


git-svn-id: http://www.latex-project.org/svnroot/experimental/trunk@4499 de43f980-851b-0410-b2f7-c40aca1f87e0