Made eventfd.cc compile under LEGACY_LINUX=1.  (Included missing header.)
Merge branch 'sam_legacy' into next
Commented out debugfs in network.cc.
Merge branch 'next' into sam_203
With some awful hacks (linux_event_watcher_t::stop_watching_for_errors) we stopped using 100% CPU.  However, we are leaking a dead TCP connection (one that does but is not destructed).
Dropped debugf statements from network.cc.