PCH not being used, but I can't tell why

[Benjamin Kosnik]

>cc1plus: warning:
>/mnt/build/build-2003-08-11/i686-pc-linux-gnu/libstdc++-v3/include/i68
>6-pc-linux-gnu/bits/stdc++.h.gch/O0g: not used because `__tune_i686__'
>not defined cc1plus: warning:
>/mnt/build/build-2003-08-11/i686-pc-linux-gnu/libstdc++-v3/include/i68
>6-pc-linux-gnu/bits/stdc++.h.gch/O2g: not used because `__tune_i686__'
>not defined

Dunno why this is being defined in one place and not the other, but at
least now you've found the error message.

Thanks!

-benjamin