xparse: Issue info not warning for redefintion of commands/environments


git-svn-id: http://www.latex-project.org/svnroot/experimental/trunk@5247 de43f980-851b-0410-b2f7-c40aca1f87e0
xparse: Shorten info messages to save log columns!


git-svn-id: http://www.latex-project.org/svnroot/experimental/trunk@5248 de43f980-851b-0410-b2f7-c40aca1f87e0