This was to work around a bug in MSVC that reports a
bogus warning MSB8012, caused by using an upgraded project.
I also in the process fixed the release build, which was building as debug earlier.
Ensures that all files that Git considers to be text will have
normalized (LF) line endings in the repository. When core.eol is set to
native (which is the default), Git will convert the line endings of
normalized files in your working directory back to your platform's
native line ending.
See also https://git-scm.com/docs/gitattributes
