Merge pull request #1094 from jwuttke/tidy1

.clang-tidy

Core/Computation/SpecularComputationTerm.cpp

Core/Scan/AngularSpecScan.cpp

Core/Scan/QSpecScan.cpp

Core/Scan/SpecularSimulationElement.cpp

Core/Simulation/SpecularSimulation.cpp

Sample/SampleBuilderEngine/SampleBuilderNode.cpp

Tests/Performance/Core/CoreIO.cpp

Tests/Performance/Core/Mesocrystal.cpp

Tests/UnitTests/Core/Fresnel/SpecularScanTest.cpp

Tests/UnitTests/Core/Other/MaterialTest.cpp