Makefile change to restart bootstraps

[Marc Espie]

In article < 10011141126.AA15195@vlsi1.ultra.nyu.edu > you write:
>But remember that machines are much faster than when people "used to"
>compain!  

Reality check: some of us still try to do maintainance on somewhat slow
boxes.

Until gcc's cross-compiling is much safer than it currently is, you can't
really call a 68040 `fast', neither a vax...

And some of us would really like to get those boxes to stay maintainable...