make crawl sync bug fixes.
fix Puz crawl from dying out on host 9
because spider reply did not resuscitate waiting
tree for its ip.
fix mike's zola crawl with a repeat of 3 days
from not incmreneting the round because it had
maxrounds 0, which means to ignore... assume 0
means to ignore now. send out 0xc1 crawl info
requests to even dead hosts so we can at least use
their last known good info.