Author: Henrik Nordstrom <hno@squid-cache.org>

Author: Henrik Nordstrom <hno@squid-cache.org>
Port from 2.7: maximum staleness limits

The default behaviour of Squid is to provide a stale copy (with Warnigng:
header) until an actove response from the origin server causes the object
to be updated or garbage collection causes its removal.

The max_stale direcive and refresh_pattern max-stale=N option allow admin
to set an upper limit on the objects age when serving stale responses.