Rename or inline local variables to avoid variable hiding

git-svn-id: https://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk@1571416 13f79535-47bb-0310-9956-ffa450edef68
Javadoc

git-svn-id: https://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk@1571419 13f79535-47bb-0310-9956-ffa450edef68
Explicit boxing

git-svn-id: https://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk@1571423 13f79535-47bb-0310-9956-ffa450edef68