modified:   src/generic/matrix_vector_product.h and .cc

The variable col_dist_pt has been made const:

void MatrixVectorProduct::setup(CRDoubleMatrix* matrix_pt,
                             LinearAlgebraDistribution* col_dist_pt)

void MatrixVectorProduct::setup(CRDoubleMatrix* matrix_pt,
                             const LinearAlgebraDistribution*
col_dist_pt)
 {

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