Using -std=c++11 to test all c99 functions for libstdc++ configuration

[Terry Guo]

Hi there,

I noticed all the c99 function test cases are still compiled with
option -std=c++98 during the configuration of libstdc++. Does this
make sense? Why don't use -std=c++11? I am a newbie. I just feel the
year 98 is older than the year 99 which means in the year 98 you can't
have functions developed in year 99. Thanks for any help.

BR,
Terry