System.Net.Http.FormattingUtilities missed RFC 850

[K1vs]

System.Net.Http.FormattingUtilities.TryParseDate is used for cookie expire date parsing, but doesn't support RFC 850 (ddd, d-MMM-yyyy H:m:s 'GMT') format. Same issue in Core was fixed by aspnet/HttpAbstractions@b41d865

[dougbu]

@bhukivskyi thank-you for reporting this issue. We do not think this is a priority at the moment.

Feel free to submit a PR to fix this.

[TKharaishvili]

PR - #196

[dougbu]

e0f1f13