there are now two time-outs, one for the complete connection time, and one for an idle time
connections that are idle for more than 2 minutes are closed, and connections that are alive since more than one hour are also closed
if the complete number of connections exceeds 64, all connections more than 64 and have most idle time are also closed
During normal operation of peers these forced closings should never appear,
but the existence of the idle connection check ensures the availability of the peer and the usability of the host.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@4134 6c8d7289-2bf4-0310-a012-ef5d649a1542