HTTPCLIENT-1557: minor code improvements

git-svn-id: https://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk@1629130 13f79535-47bb-0310-9956-ffa450edef68
HTTPCLIENT-1556: Default CookieSpecs provider not found for AbstractHttpClient subclass
Contributed by Timo Kinnunen <timo.kinnunen at gmail.com>

git-svn-id: https://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk@1629134 13f79535-47bb-0310-9956-ffa450edef68