Removed EncodingUtils

git-svn-id: https://svn.apache.org/repos/asf/httpcomponents/httpcore/trunk@1635958 13f79535-47bb-0310-9956-ffa450edef68
Optimization and cleanup of message parsing and formatting code

git-svn-id: https://svn.apache.org/repos/asf/httpcomponents/httpcore/trunk@1635959 13f79535-47bb-0310-9956-ffa450edef68