fix loading of parallel's namespace

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/coin@916 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
fix snow-style parallelization for user-specified clusters

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/coin@917 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
remove CI for CDF in the approx case (cf. r908 for the asymp case)

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/coin@918 edb9625f-4e0d-4859-8d74-9fd3b1da38cb