Made package private copy of TokenParser until provided by HttpCore

git-svn-id: https://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk@1615900 13f79535-47bb-0310-9956-ffa450edef68
HTTPCLIENT-1536: default connection operator to use HttpHost#getAddress if available

git-svn-id: https://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk@1615915 13f79535-47bb-0310-9956-ffa450edef68