package -> PACKAGE

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/coin@854 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
compatibility with R < 3.0.0

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/coin@855 edb9625f-4e0d-4859-8d74-9fd3b1da38cb