SunPro: Record support for C++14 features by SunPro 5.{14,15}
SunPro 5.15 supports -std=c++14
and several C++14 features.
SunPro 5.14 accepts -std=c++14
but does not update its definition of
__cplusplus
or any other macro to distinguish it from -std=c++11
,
so we need to blacklist a couple features that do work but that we
cannot report for that version. We can still support cxx_std_14
.