Make Jacobian types offered by dlsode.f accessible by lsode (bug #31626). * liboctave/numeric/LSODE-opts.in: Add options "jacobian type", "lower jacobian subdiagonals", and "upper jacobian subdiagonals". * liboctave/numeric/LSODE.cc (file scope, lsode_j, LSODE::do_integrate (double)): Handle new configurable Jacobian types. * build-aux/mk-opts.pl: Don't implicitly convert to integer in condition.

%!test <49379>
%! a1 = 1;
%! a2 = 2;
%! obj = class_bug49379 (a1, a2);
%! assert (obj.ctor_arg_names (), {"a1", "a2"})
%! meth (obj, a2, a1);
%! assert (obj.meth_arg_names (), {"obj", "a2", "a1"})
%! obj.meth (a2, a1);
%! assert (obj.meth_arg_names (), {"obj", "a2", "a1"})