Add argument in "generate.linear.R"

Add argument "scaling".

Add package "minpack.lm" in "DESCRIPTION".

Modify "generate.linear.test.R".
Add argument in "generate.linear.R"

Add argument "orthogonal_transformation".

Add package "pracma" in "DESCRIPTION".

Modify "generate.linear.test.R".
Add argument in "generate.linear.R"

Add argument "row_column_permutation".

Modify "generate.linear.test.R".
Add argument in "generate.linear.R"

Add argument "constant".

Modify "generate.linear.test.R".