Making DebugConfig configurable.
-trying to merge
Merge branch 'master' of https://github.com/semihsalihoglu/distributed_graph_debugger
- Implementing default DebugConfig, that can be configured.
Integrated giraph-debug script with CommandLineMain java code

- Elaborated list command to show user-friendlier information
Renamed server.CommandLineMain to utils.CommandLine
./giraph-debug mktest-master skeleton ready
Merge pull request #39 from netj/cli-integration

CLI integration
Incorporating PR comments, upstream merge and Task ID fix