Folly is a C++14 library
Folly is a C++14 library

Summary:
There are quite a few things in Folly that are not compatible with C++11.

Closes: https://github.com/facebook/folly/issues/851

Reviewed By: yfeldblum

Differential Revision: D8179239

fbshipit-source-id: b4ce23b98311a7c5ac15c3b7c9787f568535c950

facebook/folly,facebook/folly,facebook/folly,facebook/folly,facebook/folly