add a warning on non-english locales to tracebug documentation

git-svn-id: https://svn.r-project.org/ESS/trunk@5632 0bbaf3bd-34e0-0310-bf65-c717079852d4
don't create ESS-region dir on evaluation

git-svn-id: https://svn.r-project.org/ESS/trunk@5633 0bbaf3bd-34e0-0310-bf65-c717079852d4