[patch,rtems] Let rtems target default to c99-io-formats

[Ralf Corsepius]

On Mon, 2008-12-01 at 08:13 +0100, Ralf Corsepius wrote: 
> Hi,
> 
> RTEMS now uses c99-io-formats. Therefore we would like to see newlib
> default to it for *-rtems* targets.
> 
> Patch enclosed below.

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