Update help files for 'prepare' and 'panel' methods

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/ade4@677 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Correct a bug to access the non-exported '.LatticeEnv'

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/ade4@678 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Correct misprints and a bug in 'printSuperpose'

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/ade4@679 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Import from 'ade4', redefine and export 'kplot', 'plot', 'score', 'scatter' and 'screeplot' S3 methods

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/ade4@680 edb9625f-4e0d-4859-8d74-9fd3b1da38cb