Count number of noop fetches

[larsxschneider]

'client_recv=4' indicates no changes. A lot of these fetches indicate polling...

zcat babeld.log.1.gz | grep 'client_recv=4' | perl -ne 'print if s/.*ip=([^ ]+).*user=(?:user\:[0-9]+\:)([^ ]+).*repo=([^ ]+).*/\2 \3 \1/' | ...