Use the new "-R" option for broccoli-vectors and broping so that
they will retry connecting to Bro until the connection is established.
This avoids a race condition and eliminates the need for a "sleep"
after starting Bro.
Broccoli clients can only recv events w/ vectors for now.
Also changed ordering of Bro type tag enum -- the addition of opaque
types changed the value of the vector type, making broccoli.h's
definition out of sync. Probably could have just changed broccoli's
definition, but seems more correct to go back to using the same value
for vectors as they were before opaques. It's also better in case
there's some other location I'm not aware of where the values are
replicated.
