and search results still not ready after 10 seconds.
send it every 10 seconds to prevent client from closing socket.
sped up all downloads, json and csv, but not doing "fuzzy"
deduping of search results, but just deduping on page
content hash. added TcpSocket::m_numDestroys to ensure we
do not send heartbeat on a socket that was closed and
re-opened for another client.
to tcpserver.cpp for sending back
json objects as we get them from shards.
and as we get them in small pieces so we
don't go oom. made that code much simpler
and more reliable in the long run.
to allowing syncing with newly added or deleted
collections even if a host was dead when collection
was added/deleted. also added parm change request
queueing.
