A campaign server now tells all clients a unique run ID (the UNIX timestamp
when it was started). This allows us to ignore results from "old" clients
that talked to another server before, and to tell them to die.
git-svn-id: https://www4.informatik.uni-erlangen.de/i4svn/danceos/trunk/devel/fail@1677 8c4709b5-6ec9-48aa-a5cd-a96041d1645a
