Rename SpecularMagneticNew*Strategies -> SpecularMagnetic*

Sample/RT/MatrixRTCoefficients_v3.h

Sample/Specular/SpecularMagneticNCStrategy.cpp

Sample/Specular/SpecularMagneticNCStrategy.h

Sample/Specular/SpecularMagneticStrategy.cpp

Sample/Specular/SpecularMagneticStrategy.h

Sample/Specular/SpecularMagneticTanhStrategy.cpp

Sample/Specular/SpecularMagneticTanhStrategy.h

Sample/Specular/SpecularStrategyBuilder.cpp

Tests/UnitTests/Core/Fresnel/SpecularMagneticTest.cpp