simplified udag2pdagRelaxed

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/pcalg@217 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
Bugfixes in documentation and tests: consistent transition to argument "verbose" instead of argument "DEBUG.LEVEL"

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/pcalg@218 edb9625f-4e0d-4859-8d74-9fd3b1da38cb