Pylons/pyramid — pull request #1072 by wichert (2013-08-10 20:26:56+00:00)
Title: No cookies on other domain with parent_domain

This address a [comment from @enmand](https://github.com/Pylons/pyramid/pull/1028#issuecomment-21523972) on Pylons/pyramid#1028: when using parent_domain you should never set a cookie on the current domain, or you risk getting invalid behaviour when logging in on one domain and doing logout on another domain.