In commit 8ed03baa (gitattributes: prefer `eol=crlf` to `-crlf`,
2017-08-23) we left a few CRLF blobs in the repository.  Some Git
versions get confused by text files with CRLF blobs.  Convert them
to LF blobs.  Use the `eol=crlf` attribute to tell Git to use CRLF
on checkout.