prkey is only fetched when it's needed
tor nodes who aren't dirservers now fetch directories and autoconnect
to new nodes listed in the directory
default role is a non-dirserver node
svn:r120
Note that there are new keywords in these, etc. Matej, would you be
interested in going through and patching routers.c, config.c, etc, so
they're cleaner?
svn:r19