fix maxspidersperip limitation not being obeyed.
removed fakedb.
only add "0" time waiting tree keys to waiting tree.
only scanSpiderdb() will change their times to
a future time or add them to doledb directly.
confirmLockAcquisition() will not add to waitingtree
if max spiders per ip limit would be exceeded.
an incoming spider reply will trigger the add to
waiting tree with a time of "0".
spider request so urldata=xxxx can turn link
spidering off. probably desirable so its default.
so &spiderlinks=[0|1] applies to urldata as well
as injecturl=
use msg12 to remove rec from doledb/doleiptable
and add 0 entry to waiting table so doledb is
again immediately repopulated with that firstIp
so we can spider multiple urls from the same ip
at the same time.
collections, really limited by the sizeof(collnum_t) only now,
which is 16bits, 15bits unsigned, which is the limitation.
can always expand this so we can have more than 32k collections.
doledb at the very first key in spiderdb.
causes lots of positive/negative key annihilations.
we end up re-reading like 300 times in some
cases just to get a url from a doledb priority.
