[PATCH][RFC] Prevent implicit FPU usage

[Momchil Velikov]

Paul Brook wrote:
>>The two extra failures in ``-fno-implicit-fp'' test are also present in
>>``-mhitachi'' runs, thus I'd rather think they come from the usage of the
>>Renesas ABI.
> 
> Why are you making this option change the ABI?
> This seems unexpected at best, plain broken at worst.

  Because otherwise variable argument functions itself access floating point
registers.

~velco