Don't use timezones in unit tests.


git-svn-id: https://svn.calendarserver.org/repository/calendarserver@13631 e27351fd-9f3e-4f54-a53b-843176b1656c
Fix calculation of directory service call timings


git-svn-id: https://svn.calendarserver.org/repository/calendarserver@13632 e27351fd-9f3e-4f54-a53b-843176b1656c
Do not update past instance of event that spans past to future


git-svn-id: https://svn.calendarserver.org/repository/calendarserver@13633 e27351fd-9f3e-4f54-a53b-843176b1656c
Work around twext.who.opendirectory problem with CompoundExpressions that become MatchExpressions once the record type portion(s) are removed.


git-svn-id: https://svn.calendarserver.org/repository/calendarserver@13634 e27351fd-9f3e-4f54-a53b-843176b1656c