World broken in stage 1.1

[M. Warner Losh]

In message: <20040810231044.GA70020 at xor.obsecurity.org>
            Kris Kennaway <kris at obsecurity.org> writes:
: More fallout from the wonderful new make(1) semantics? 

I think it is speficially related to the changes to src/Makefile and
src/Makefile.inc1.  If I s/${_+_}//g on those two files, it appears
that I can buildworld again (at least it doesn't die right away).

Warner