on ess-eval-*-and-step commands move to next empty line at eob

git-svn-id: https://svn.r-project.org/ESS/trunk@5378 0bbaf3bd-34e0-0310-bf65-c717079852d4
make ess-local-process-name permanent

git-svn-id: https://svn.r-project.org/ESS/trunk@5379 0bbaf3bd-34e0-0310-bf65-c717079852d4
rdired: a more reliable .rdired.objects command

git-svn-id: https://svn.r-project.org/ESS/trunk@5380 0bbaf3bd-34e0-0310-bf65-c717079852d4
a range of improvements and corrections in ess-rdired

   -- ess-rdired-mode-map is defined with defvar
   -- use ess-eval-linewise instead of ess-execute in a couple of locations
   -- use ess-command instead of ess-execute in a couple of locations
   -- don't kill all local variables in ess-rdired-mode
   (see code for more)

git-svn-id: https://svn.r-project.org/ESS/trunk@5381 0bbaf3bd-34e0-0310-bf65-c717079852d4