How to make native build?

[Miro Kropáček]

> By default, newlib does not build natively.  It is expected that you would
> use glibc.  To build for i686-pc-linux-gnu, you need to specify
> --target=i686-pc-linux-gnu --with-newlib on your configuration.  Note that
thanks, this did the job.

I suggest to update --help output because none of the options from FAQ
(--enable-target-optspace, --enable-newlib-mb, and
--enable-newlib-hw-fp) are there, same for --with-newlib, one can only
guess (and ask in mailing list).

Miro