CTest: Add Jacoco Coverage functionality

Add the ability to parse the XML output of the Jacoco tool.

Jacoco (www.eclemma.org/jacoco) is a Java coverage tool.
Add and integrate a class for the parser and
include a test which utilizes the new parser.
Merge topic 'add_jacoco_coverage_parsing' into next

558c2190 CTest: Add Jacoco Coverage functionality