vdecal/vlayer packing fixes


git-svn-id: svn://svn.tuxfamily.org/svnroot/tesseract/main@1746 b412e182-2ed4-4078-95c4-27dc59f57fa9
mark vslotrefs as unused


git-svn-id: svn://svn.tuxfamily.org/svnroot/tesseract/main@1747 b412e182-2ed4-4078-95c4-27dc59f57fa9
pasteundoents cleanup


git-svn-id: svn://svn.tuxfamily.org/svnroot/tesseract/main@1748 b412e182-2ed4-4078-95c4-27dc59f57fa9