The "dns_TXT_reply" event now uses a "vector of strings" as the final
parameter instead of just a "string" in order to support DNS TXT
resource records that contain multiple character-strings.
The format in which the TXT answers are logged by default is now changed
to be a list of strings of the form `fmt("TXT %d %s", |str|, str)`, one
for each character-string in the RR and delimited by a space (' ')
character.
- Each transaction ID within a connection is now maintained as
a queue of DNS::Info logging records.
- New function added to the queue.bro script to support
peeking at the new gettable item in the queue without removing it.
