make server a static lib, run it in a separate thread

issues to solve:
- dynamic_cast error 2: One or more of the following type_info's has hidden visibility or is defined in more than one translation unit. They should all have public visibility. 13CPackForLobby, 20LobbyClientConnected, 20LobbyClientConnected.
- error setting socket option: set_option: No buffer space available

server/CVCMIServer.h

@@ -103,5 +103,7 @@ public:
 
 #ifdef VCMI_ANDROID
 	static void create();
+#elif defined(VCMI_IOS)
+    static void create(boost::condition_variable * cond);
 #endif
 };