Add classes SinglePoolStrategy, DonateStrategy, IStrategy, IStrategyListener.

src/net/Client.h

@@ -60,6 +60,7 @@ public:
     void send(char *data);
     void setUrl(const Url *url);
     void submit(const JobResult &result);
+
     inline bool isReady() const              { return m_state == ConnectedState && m_failures == 0; }
     inline const char *host() const          { return m_url.host(); }
     inline const Job &job() const            { return m_job; }