[patch RFA] Fix a libstdc++-v3 test for SH

[Paolo Carlini]

Kaz Kojima wrote:

>Hi,
>
>SH needs -mieee option for tr1/5_numerical_facilities/special_functions/
>17_hyperg/check_nan.cc test.  The patch is tested on i686-pc-linux-gnu too.
>Ok for mainline?
>
Ok, thanks.

Paolo.