make TridiagonalizationMatrixTReturnType internal and only export a public MatrixTReturnType typedef
make TridiagonalizationMatrixTReturnType internal and only export a public MatrixTReturnType typedef

cjntaylor/eigen,pthulhu/eigen,cjntaylor/eigen,pthulhu/eigen,cjntaylor/eigen,cjntaylor/eigen,pthulhu/eigen,pthulhu/eigen,pthulhu/eigen