square/okhttp — pull request #987 by ChristianBecker (2014-07-09 07:03:56+00:00)
Title: Add trailing CRLF to multipart.

Port of square/retrofit#552. Quote from @JakeWharton:
> .NET's MVC 4 fails to parse multipart uploads which lack a trailing CRLF. This is safe to add to all multipart requests since it is after the final boundary which is considered part of the epilogue and is ignored (per RFC1341 section 7.2.1).