Created a NetworkGameObserver class able to extend the serialization code of GameObserver to synchronize and forward game actions on the network

Fixes in GameObserver serialization/deserialization code
Fixes in JNetwork and JSocket on windows
Various code cleanup (currentGamePhase access in particular)
Updated GUI code to re-enable a basic network GUI
Activated threaded tests on Windows. It uses 4 threads by default.

projects/mtg/include/Player.h

@@ -102,6 +102,7 @@ public:
     std::string GetCurrentDeckStatsFile();
     virtual bool parseLine(const string& s);
     friend ostream& operator<<(ostream&, const Player&);
+	friend istream& operator>>(istream&, Player&);
     bool operator<(Player& aPlayer);
     bool isDead();
 };