MathOpt → MathLin Relation

File in src/FoundationClasses/TKMath/MathOpt	Includes file in src/FoundationClasses/TKMath/MathLin
MathOpt_Newton.hxx	MathLin_Gauss.hxx
MathOpt_Uzawa.hxx	MathLin_Crout.hxx