Offline LAN crossplay fixes and correct PS3 tutorial pack source

- Handle pre-login permission checks in offline/system-link mode when
  Xbox Live is disabled (grant canPlay/canPlayLocal/friends permissions)
- Log Offline LAN handshake events (PreLogin/Login/GAME_PLAY state)
- Stub: set QNET_STATE_GAME_PLAY on SetGamePlayState and advertise the
  session joinable when hosting
- PS3 postbuild: source the PS3 tutorial pack from the PS3 tree instead
  of the PSVita tree so the big-endian PS3 DLC parser doesn't read a
  little-endian pack as garbage (fixes RPCS3 boot crash in
  DLCManager::processDLCDataFile)

Minecraft.Client/Common/Network/PlatformNetworkManagerStub.cpp

@@ -170,6 +170,8 @@ bool CPlatformNetworkManagerStub::Initialise(CGameNetworkManager *pGameNetworkMa
 	m_bLeaveGameOnTick = false;
 	m_bHostChanged = false;
 
+	app.DebugPrintf("Using offline LAN network backend\n");
+
 	m_bSearchResultsReady = false;
 	m_bSearchPending = false;
 
@@ -475,6 +477,20 @@ bool CPlatformNetworkManagerStub::_RunNetworkGame()
 	return true;
 }
 
+void CPlatformNetworkManagerStub::SetGamePlayState()
+{
+	extern QNET_STATE _iQNetStubState;
+
+	_iQNetStubState = QNET_STATE_GAME_PLAY;
+
+	if (m_pIQNet->IsHost())
+	{
+		WinsockNetLayer::UpdateAdvertiseJoinable(true);
+	}
+
+	app.DebugPrintf("Offline LAN: entered GAME_PLAY state\n");
+}
+
 void CPlatformNetworkManagerStub::UpdateAndSetGameSessionData(INetworkPlayer *pNetworkPlayerLeaving /*= NULL*/)
 {
 // 	DWORD playerCount = m_pIQNet->GetPlayerCount();