Upgraded HttpCore to version 4.4

git-svn-id: https://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk@1646863 13f79535-47bb-0310-9956-ffa450edef68
RFC 6265 compliant cookie spec

git-svn-id: https://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk@1646864 13f79535-47bb-0310-9956-ffa450edef68