BUG: cookies with expiration date

[Ivan Ukhov]

Hi!

Please have a look at this line:

http://github.com/rack/rack/blob/663abfce9b71ab273c8adc0e76c233671bc43e1d/lib/rack/response.rb#L64

value[:expires].clone.gmtime.strftime("%a, %d-%b-%Y %H:%M:%S GMT")

My default system locale is ru_RU.UTF8, therefore this line produces
string with Russian letters. Browsers cant set expiration date in
Russian. FF sets session cookies, Safari doesnt set cookies at all.
Suppose this is a bug. Instead of strftime, rfc2822 should be used.

Thanks.