The tcltest-real target always reports that it is not
up to date, so anything that depends on it,
including `make test`, *always* re-links the
This is wasteful, and it also adds a restriction
that only those with the necessary permissions
to link tcltest can run a `make test`.
This should be fixed so that when a valid,
up to date tcltest executable is already
there, a new one is not re-linked.