-* Fixed HttpResponse::setHeader("name", {omitted|NULL|""}) not unsetting header
-* Fixed array parameters to allow NULL in HttpRequest::__construct(),
- HttpRequest::getResposeCookie(), HttpMessage::setHeaders(),
- http_parse_cookie(), http_post_fields().
-* Fixed possible leak in http_send_data() and HttpResponse::setData()
-* Fixed build --without-http-curl-requests (bug #8872)
-* Fixed build with PHP < 4.3.10 (bug #9067)
+o Improved new persistent handles functionality
+ - Removed --enable-http-persistent-handles
+ + Added http.persistent.handles.limit system INI option which controls
+ the maximum amount of idle persistent handles kept around (per provider);
+ 0 means every handle is destroyed after usage (i.e. disabled),
+ -1 means virtually unlimited maximum amount of idle handles (default)