Define __STDC_IEC_559* based on __GCC_IEC_559*

[Ondřej Bílka]

On Tue, Oct 15, 2013 at 09:42:49PM +0000, Joseph S. Myers wrote:
> 2013-10-15  Joseph Myers  <joseph@codesourcery.com>
> 
> 	* include/stdc-predef.h [__GCC_IEC_559] (__STDC_IEC_559__): Define
> 	depending on [__GCC_IEC_559 > 0].
> 	[__GCC_IEC_559_COMPLEX] (__STDC_IEC_559_COMPLEX__): Define
> 	depending on [__GCC_IEC_559_COMPLEX > 0].
>
Missing bug 15720 entry.