[CMAKE MODULES] test reporting

[jguidoux]

At this time, the only report of unit testing is produced in the standard output.
Reading easily this type of reporting is important.
Test reports is a documentation in real time of 'what do' and ''what not do' an application.
Finding a better way to produce test reports in text format or better, in html format like gradle do with junit.
http://2.bp.blogspot.com/-ElCEDWh_5JI/UFSuwkc_q7I/AAAAAAAAADk/rEU3HVTkaG8/s1600/Gradle+test+report.png.
Or with BDD (Behaviour Driven Test) style) : http://codepen.io/renatoathaydes/full/ihGgt