Added additional setup property for MembershipProvider, SessionProvider, and ProfileProvider to always deal in Utc DateTimes.
The default MembershipUser constructor takes all DateTime objects and calls ToUniversalTime on them. Then all the public Properties will call ToLocalTime again on the internally stored objects. Created MySqlMembershipUser to always get back Utc times.
Additional tests for MembershipProvider to test DateTime property and returned User objects.