Patch to remove putenv definition from gcc.c

[John David Anglin]

> There was talk of revising collect2's interface so it didn't use
> environment variables anymore.  If that ever happens, we wouldn't need
> putenv from gcc.c.

That's a good idea because the size of gcc's environment exceeds POSIX
minimums and causes trouble for systems with small ARG_MAX limits.  This
caused exec failures under ultrix in the bootstrap.  The problem was
resolved by hacking gnu make so it didn't export variables by default
and a small change to the gcc Makefile.  However, gcc still exports
too much.

Dave
-- 
J. David Anglin                                  dave.anglin@nrc.ca
National Research Council of Canada              (613) 990-0752 (FAX: 952-6605)