busybox

ntpd: add -w "watch" option, useful for debugging to look at our own data

Also fixed a small buglet discovered using -w

function                                             old     new   delta
recv_and_process_peer_pkt                            895     944     +49
select_and_cluster                                  1132    1150     +18
packed_usage                                       26769   26767      -2

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>