verified clients and backbone now both come up with rpyc serveres on planet lab
added ability to have XgetDAGbyName return properly if the input string is already a DAG
stopped unecessary error in XgetDAGbyName when using a name for a host in NS or hosts.xia
added a count (-n) and interval (-i) flag to xping and printing of hop count for xtraceroute
added basic support for xping and xtraceroute stat gathering on planetlab