Shorter NHttpConnectionBase#toString

git-svn-id: https://svn.apache.org/repos/asf/httpcomponents/httpcore/trunk@1598488 13f79535-47bb-0310-9956-ffa450edef68
Updated embedded server examples (blocking and non-blocking)

git-svn-id: https://svn.apache.org/repos/asf/httpcomponents/httpcore/trunk@1598494 13f79535-47bb-0310-9956-ffa450edef68
Renamed classes

git-svn-id: https://svn.apache.org/repos/asf/httpcomponents/httpcore/trunk@1598495 13f79535-47bb-0310-9956-ffa450edef68
Added pipelining HTTP client example

git-svn-id: https://svn.apache.org/repos/asf/httpcomponents/httpcore/trunk@1598512 13f79535-47bb-0310-9956-ffa450edef68