add Command line param "language"

engine/cl_main.cpp

@@ -2742,10 +2742,17 @@ void CL_InitLanguageCvar()
 		cl_language.SetValue( Steam3Client().SteamApps()->GetCurrentGameLanguage() );
 	}
 	else
+	{
+		if ( CommandLine()->CheckParm( "-language" ) )
+		{
+			cl_language.SetValue( CommandLine()->ParmValue( "-language", "english") );
+		}
+		else
 		{
 			cl_language.SetValue( "english" );
 		}
 	}
+}
 
 void CL_ChangeCloudSettingsCvar( IConVar *var, const char *pOldValue, float flOldValue );
 ConVar cl_cloud_settings( "cl_cloud_settings", "1", FCVAR_HIDDEN, "Cloud enabled from (from HKCU\\Software\\Valve\\Steam\\Apps\\appid\\Cloud)", CL_ChangeCloudSettingsCvar );