Demers post processing
Merge pull request #6 from NielsZeilemaker/demers

Demers post processing
Allow to customize which R scripts to run when post processing
Add demers.r to run when post processing
Use specific demers statistics extraction script
convert to unix newlines, add header and shebang
Some fixes for stuff reported by Niels
Kill all the processes spawned by us if they are still there after
stopping the reactor.
Control the verbosity of gumby a bit
Merge pull request #57 from whirm/reduce-verbosity

Control the verbosity of gumby a bit
Properly split arguments to respect double quotes, etc.
run pycompile in das4_setup.sh instead of tribler_experiment_setup.sh
Also, call das4_setup.from tribler_experiment_setup.sh
Merge pull request #58 from whirm/pycompile

run pycompile in das4_setup.sh instead of tribler_experiment_setup.sh
Stop client when dispersy fails with strict enabled.
add new psutil dep
Merge pull request #59 from whirm/demers

Demers
move logging stuff to log.py and a few test experiments
Let SGE clean up after us
Improve DAS4 flexibility: just set the amount of nodes/instances you
want with das4_instances_to_run and the processes will get evenly
distributed. Also the sync_subscribers_amount var is now optional and
the experiment server will use das4_instances_to_run if not set.
Update all the experiments using das4_reserve_and_run