<type_traits>: Workaround for common_reference - #2592

<type_traits>: Workaround for common_reference#2592

Stephan T. Lavavej (StephanTLavavej) merged 20 commits into

microsoft:mainmicrosoft/STL:mainfrom

frederick-vs-ja:common-reference-workaroundfrederick-vs-ja/STL:common-reference-workaroundCopy head branch name to clipboard