more simple function bugs

git-svn-id: https://svn.r-project.org/ESS/trunk@5421 0bbaf3bd-34e0-0310-bf65-c717079852d4
adjust indent-command to use indent-line-function instead of ess-indent-line directly

git-svn-id: https://svn.r-project.org/ESS/trunk@5422 0bbaf3bd-34e0-0310-bf65-c717079852d4