Changed: Use upgrade script if present

--HG--
branch : develop

code/ryzom/client/src/login_patch.cpp

@@ -119,8 +119,10 @@ CPatchManager::CPatchManager() : State("t_state"), DataScanState("t_data_scan_st
 
 #ifdef NL_OS_WINDOWS
 	UpdateBatchFilename = "updt_nl.bat";
+	UpgradeBatchFilename = "upgd_nl.bat";
 #else
 	UpdateBatchFilename = "updt_nl.sh";
+	UpgradeBatchFilename = "upgd_nl.sh";
 #endif
 
 	// use application directory by default

code/ryzom/client/src/login_patch.h

@@ -433,6 +433,7 @@ private:
 	/// Now deprecated : the launcher is the client ryzom
 	std::string RyzomFilename;
 	std::string UpdateBatchFilename;
+	std::string UpgradeBatchFilename;
 
 	// Where the client get all delta and desc file
 	std::string ClientPatchPath; // Temporary path