added ... argument to logit() convenience function

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/partykit@447 255f4249-2263-4417-b1ea-8498779e27a7
potential support of restarting values in mob

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/partykit@448 255f4249-2263-4417-b1ea-8498779e27a7
improved formatting of some .Rd pages

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/partykit@449 255f4249-2263-4417-b1ea-8498779e27a7