CMake: Added tests for headers math.h and float.h.
CMake: Added tests for functions isnan, std::isnan and _isnan.
DUNE/Math: Added function to test if a given floating point variable contains a value that is not a number.
DUNE/Simulation: In class UAV, replaced calls to non ISO C++98 isnan() with Math::isNaN().
Maneuver/VehicleFormation/FormCollAvoid: Replaced calls to non ISO C++98 isnan() with Math::isNaN().
Simulators/UAV: Replaced calls to non ISO C++98 isnan() with Math::isNaN().
Merge branch 'feature/isnan'