Do not use std::is_trivially_copyable on GCC 4.X
Although GCC 4.8 and 4.9 claim to be C++11 compliant, there are a few C++11 features they do not support. One of these features is std::is_trivially_copyable. So on these platforms, do not attempt to use it. Instead, treat nothing as trivially copyable.
Showing with 50 additions and 15 deletions