Using GCC 2.95 as a bootstrap compiler

[John Marshall]

Richard Earnshaw wrote:
> gcc-2.95 was including the files in a 
> different order based on #line directives
[...]
> I'm not a cpp expert, but I'm surprised that this changed with the new 
> pre-processor.

See http://gcc.gnu.org/PR5153 for way too much discussion of this and
also the note that was added to "Line Control" in the CPP manual as a
result of that bug report.

    John