integrated -save-temps and the death of specs

[Robert Dewar]

<<I would much prefer to go in the direction of having *more* specs files
(for example language-specific) so that we become less depenendent on
the particular binary of the driver being used.  We have had lots of
problems with this in the past.
>>

I definitely agree with Richard here, it would be nice to have all
language dependencies separated from the driver proper.