insert new line at the end of input when ess-eval-visibly is 'nowait

git-svn-id: https://svn.r-project.org/ESS/trunk@5383 0bbaf3bd-34e0-0310-bf65-c717079852d4
update window after changing ess-developer status (needed in emacs 24.2.9)

git-svn-id: https://svn.r-project.org/ESS/trunk@5384 0bbaf3bd-34e0-0310-bf65-c717079852d4