more info in Matrix.msg()


git-svn-id: svn://svn.r-forge.r-project.org/svnroot/matrix@2991 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
chk.s() improvements

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/matrix@2992 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
crossprod() and kronecker() where wrong for some <indMatrix>; fix from Fabian Scheibl

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/matrix@2993 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
testing new warnings

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/matrix@2994 edb9625f-4e0d-4859-8d74-9fd3b1da38cb