STL Fixes In VS 2017 RTM

VS 2017 RTM will be released soon. VS 2017 RC is available now and contains all of the changes described here - please try it out and send feedback through the IDE's Help > Send Feedback > Report A Problem (or Provide A Suggestion). This is the third and final post for what's changed in the STL between VS 2015 Update 3 and VS 2017 RTM. In t...