perf(toolbox): remove some useless files in streamcluster

Remove some files of the parsec bench suite which are useless for
streamcluster and slowdown the xen-set-home.
feat(toolbox): add the dataset and thread count for streamcluster

Add two new parameters to the streamcluster script to set the data set
to be used and the number of thread to execute.
fix(toolbox): replace a fork/exec by simple exec for msrperf

Make the msrperf script exec the xenperf program whereas to fork/exec,
allowing the xenperf program to be stopped by a kill.
fix(toolbox): add a delay before the magic computation in xen-command

Add a delay between the command execution and the magic number print
in xen-command, in order to void the magic number be printed to soon
and so be ignored by the xen-command script.
feat(toolbox): add a script to execute a generic XML coded experiment

Add a xenbench script which take an xml description of the exeperiment
and execute it, allowing to describe the exepriment more efficiently
than with a shell script.
reafector(toolbox): transform the streamcluster script into xml

Transform the streamcluster-1domu into its xml description accordingly
to the xenbench format.
feat(toolbox): add a new benchmark

Add the swaptions benchmark and an xml experiment using it.
fix(toolbox): fix a xvda2 size computation problem

The size of the virtual /home partition (xvda2) was computed with the
size of $HOME instead of $HSHOME which was causing failure when the
HSHOME was larger than the HOME (which was /root because of the sudo).
feat(toolbox): add the fluidanimate benchmark

Add the fluidanimate benchmark building and running script and a xml
description of an experiment using it.