feat(toolbox): add a line filtering script

Add a script to perform a filtering script on a file gnuplot
formatted.
feat(toolbox): add a reversing script

Add a script to transform, in a gnuplot formatted file, the line into
columns and vice-versa.
feat(toolbox): add min and max operators for reducel

Add the operators min and max for the line reduction script.
feat(toolbox): add a script to exctract time information from a file

Add a script to find the time command output in a file and print it in
a gnuplot formatted output.
chore(toolbox): relocate the experiment descriptition/script

Move the experiment related files (native script or Xen xml) into a
dedicated directory outside of the toolbox, since this last should
only contains tools.
perf: add another bunch of benchmark results

Add the remaining of benchmark results for the 2014-07-22 and the
extracted data for the time and access rate, and the gnuplot scripts
to plot them.