Revised HttpClientConnectionManager API

git-svn-id: https://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk@1454679 13f79535-47bb-0310-9956-ffa450edef68
Minor tweak to debug log message

git-svn-id: https://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk@1454680 13f79535-47bb-0310-9956-ffa450edef68