INCOMPATIBLE CHANGE: struct_time(1,2,3,4,5,6,7,8,9) is now _rejected_
just as on standad Python.
This incorrect constructor was added by me in #2327; I assumed
without even checking that the `struct_time` constructor was also
compatible with the `namedtuple` constructor, but it is not and has
always been rejected by standard Python (checked 2.7 and 3.9)
This commit restores the specific error message that we used for this
purpose, which was removed in the previous commit either out of laziness
or out of trying to reduce unneeded error strings. In this case, the
alternate string is too misleading (it refers to arguments, not to
sequence elements) so let's put the better message back.
3dcd603e39