egcs-970828: Some nits

[meissner@cygnus.com]

| > I'm thinking about adding a "bootstrap" target at the toplevel that heads
| > into the gcc tree first, does a 3stage on gcc, then builds the rest of
| > the tree.
| > 
| Please make this delete stage1 when stage2 is finished, so that you don't
| have to have stage{1+2+3} worth of free disk space to do this in.

On the other hand, if you don't keep all three directories around, it can make
it mightly hard to debug when things go wrong.  I find bootstrapping with
-save-temps helps even more (again at a cost in disk space).  Every thing in
life is a tradeoff.