Handle sigchld more cleanly
Handle sigchld more cleanly

Javex/mixminion,nmathewson/mixminion,rxcomm/mixminion,Javex/mixminion,crooks/mixminion,nmathewson/mixminion,crooks/mixminion,rxcomm/mixminion,reezer/mixminion,mixminion/mixminion,Javex/mixminion,Javex/mixminion,mixminion/mixminion,mixminion/mixminion,reezer/mixminion,nmathewson/mixminion,crooks/mixminion,reezer/mixminion,reezer/mixminion,nmathewson/mixminion,rxcomm/mixminion,rxcomm/mixminion,crooks/mixminion,mixminion/mixminion