Upgraded HttpCore to version 4.4-beta1

git-svn-id: https://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk@1626679 13f79535-47bb-0310-9956-ffa450edef68
NetscapeDraftHeaderParser to use TokenParser from core internally

git-svn-id: https://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk@1626680 13f79535-47bb-0310-9956-ffa450edef68