o Fix a few comment typos.

o Fix a few comment typos.
o Fix ``set timeout'' usage message and documentation.
o Change ifOutPackets, ifOutOctets and ifOutLQRs to `u_int32_t's
  so that they wrap correctly.
o Put the LQR in network byte order using the correct struct size
  (sizeof u_int32_t, not sizeof u_long).
o Wrap LQR ECHO counters correctly.
o Don't increment OutLQR count if the last LQR hasn't been replied
  to.
o Initialise HisLqrData (last received LQR) in StartLqm.
o Don't start the LQR timer if we're `disabled' and `accepted'.
o Generate LQR responses when both sides are using a timer and
  we're not going to send our next LQR before the peers max timeout.

LQR should now be fully functional.