Core: Limited size of io queues to the number of io threads * 1000. Added building iterate.cpp from example to main build without installation.
Core: added checking epoll_events
Core: removed useless checks.
Monitoring: Added rwlock on access to dnet_node::monitor
Merge pull request #356 from shaitan/master

Core: Limited size of io queues to the number of io threads * 1000. (master)