added a setting for max outstanding requests, and a limit for BitComet since it's known to have a very low limit, also added an extension header to specify it. Fixed another unnecessary delay spotted by Tianhao Qiu. Cleaned up the logging class a bit. Fixed a bug that would cause an assert when removing a torrent queued for checking.

docs/manual.rst

@@ -2346,6 +2346,20 @@ This function is declared in the header ``<libtorrent/identify_client.hpp>``. It
 to extract a string describing a client version from its peer-id. It will recognize most clients
 that have this kind of identification in the peer-id.
 
+
+client_fingerprint()
+--------------------
+
+	::
+
+		boost::optional<fingerprint> client_fingerprint(peer_id const& p);
+
+Returns an optional fingerprint if any can be identified from the peer id. This can be used
+to automate the identification of clients. It will not be able to identifiy peers with non-
+standard encodings. Only Azureus style, Shadow's style and Mainline style. This function is
+declared in the header ``<libtorrent/identify_client.hpp>``.
+
+
 bdecode() bencode()
 -------------------