Added 1:1 line on performance plot.
Put in consistent axis ranges
Merge branch 'master' of https://github.com/cvuosalo/xrootd_scaletest
Trying to overcome make_stat_plots.py problems.

Conflicts:
	make_stat_plots.py
Put in consistent axis ranges
Merge pull request #1 from cvuosalo/master

Enhancements to make_stat_plots.py