reference to all function name repaired.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/fgm@18 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
vignette added

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/fgm@19 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
vignette

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/fgm@20 edb9625f-4e0d-4859-8d74-9fd3b1da38cb