- do exponential backoff for connection creation


git-svn-id: https://gnunet.org/svn/gnunet@31822 140774ce-b5e7-0310-ab8b-a85725594a96
bad comment, option actually not required anymore as we do not use VERY_STRONG anyway

git-svn-id: https://gnunet.org/svn/gnunet@31823 140774ce-b5e7-0310-ab8b-a85725594a96