Using Clang to compile on Windows

The pull request was accepted and has been merged into [FONT=courier new]DEV-BUILD. My branches on github that I mentioned earlier will go away some time after Clang-CL support lands on the [FONT=courier new]master](https://github.com/EpicGames/UnrealEngine/commits/master) branch. It sounds like there’s now going to be Clang builds in the Epic CI system, so I expect it’ll remain functional for future releases. :slight_smile:

Thanks to [USER=“1345”]Ben Marsh[/USER] on the Epic side for merging my changes.