Patch by Jerry for issue 46:

- Unit test for sending file data from server to client.
- Removed singleton pattern from CSocketMultiplexer for easier unit testing.
- Incremented protocol version from 1.4 to 1.5 (new file chunk message).
- Storing pointer to CConfig instead of copying in CServer (so we can mock it).
- Created a common event queue for testing (timeout, quit event, etc).
- Fixed code style.

src/lib/server/CBaseClientProxy.h

@@ -83,6 +83,7 @@ public:
 	virtual void		screensaver(bool activate) = 0;
 	virtual void		resetOptions() = 0;
 	virtual void		setOptions(const COptionsList& options) = 0;
+	virtual void		fileChunkSending(UInt8 mark, const UInt8* data) = 0;
 	virtual CString		getName() const;
 
 private: