fixing julia's interactive help system

git-svn-id: https://svn.r-project.org/ESS/trunk@5563 0bbaf3bd-34e0-0310-bf65-c717079852d4
adjusting julia's imenu regexp

git-svn-id: https://svn.r-project.org/ESS/trunk@5564 0bbaf3bd-34e0-0310-bf65-c717079852d4
make eldoc functionality dialect specific

git-svn-id: https://svn.r-project.org/ESS/trunk@5565 0bbaf3bd-34e0-0310-bf65-c717079852d4
add eldoc functionality to julia.el

git-svn-id: https://svn.r-project.org/ESS/trunk@5566 0bbaf3bd-34e0-0310-bf65-c717079852d4