If connecting to a server failed without needing any time for DNS, the connect
timer would busy loop over the networks, because a network re-inserted itself
into the queue and the timer would try the network again.
Fix this by moving the connection queue to a separate instance of std::list when
the timer fires. From then on, we just iterate through that list while networks
which want to try again add themselves to the "real" connection queue instead.
We only have to make sure that any networks that are left in the old connection
queue after the timer is done get prepended to the "real" connection queue.
Signed-off-by: Uli Schlachter <psychon@znc.in>
UpdateModule has been moved to CZNC because it doesn't really fit into
CUser. The new UpdateModule will reload the module for global modules,
user modules and network modules.
Fixes#69
