3.0 branch bootstrap fails on FreeBSD 4.2?

[Bruce Korb]

I think fixincl is supposed to be compiled using the bootstrap
compiler (i.e. whatever you used to build xgcc).  In any event,
CC is being passed in to the mkfixinc.sh script as:

  CC="stage1/xgcc -Bstage1/ -B/tmp/cfr/..."

in other words, as a file name relative to the gcc directory.
So either the bootstrap compiler needs to be restored as the
compiler used, or a proper path needs to be supplied here.
(In which case, we can relax all the K&R-isms too, yes?)
I don't know which is correct because I don't know what changed.
Another build vs. host gotcha.