patch for -Wno-long-long and early GNAT compilers

[Florian Weimer]

dewar@gnat.com (Robert Dewar) writes:

> There was *never* an "official word" that you could bootstrap GNAT using
> the 2.95 C compiler, I don't quite know where you got that viewpoint.

IIRC, you approved the build instructions which encourage people to do
so, I'm afraid. ;-)

And the build instructions are probably as official as we can get in
the FSF context.