fails(JRUBY-4176):Matrix#minor with start_row, nrows, start_col, ncols returns nil for negative nrows or ncols
fails(JRUBY-4176):Matrix#minor with col_range, row_range returns nil if col_range or row_range is out of range
fails(JRUBY-4176):Matrix#minor with start_row, nrows, start_col, ncols returns an empty Matrix unless nrows and ncols are greater than 0
fails(JRUBY-4176):Matrix#minor with start_row, nrows, start_col, ncols returns nil for out-of-bounds start_row/col
