* Limit the number of simultanious http connections.

* Added max_open_http to the man page.


git-svn-id: svn://rakshasa.no/libtorrent/trunk/rtorrent@840 e378c898-3ddf-0310-93e7-cc216c733640

src/core/poll_manager_kqueue.cc

@@ -68,7 +68,7 @@ PollManagerKQueue::poll(rak::timer timeout) {
   torrent::perform();
   timeout = std::min(timeout, rak::timer(torrent::next_timeout())) + 1000;
 
-  if (m_httpStack.is_busy()) {
+  if (!m_httpStack.empty()) {
     // When we're using libcurl we need to use select, but as this is
     // inefficient we try avoiding it whenever possible.
 #if defined USE_VARIABLE_FDSET