to add all new files in a project to the respository you can use either:
svn status | grep "^\?" | awk '{print $2}' | xargs svn add svn status | grep "^\?" | sed -e 's/? *//' | sed -e 's/ /\\ /g' | xargs svn add
to remove all svn directories from a project:
find . -iname '.svn' -print0 | xargs -0 rm -rf
