Changed many parts of GameCommand to improve error reporting. Fixed GameCommand setpref to not set when loading the command. Minor fix to ScreenOptionsExample.ini to explain that SongInCurrentSongGroup is unusable. CommonMetrics, CourseContentsList, HoldJudgent, OptionRowHandler all have minor changes to fix crashes on malformed theme data.

src/GameCommand.h

@@ -34,7 +34,7 @@ public:
 		m_sAnnouncer(""), m_sPreferredModifiers(""),
 		m_sStageModifiers(""), m_sScreen(""), m_LuaFunction(),
 		m_pSong(NULL), m_pSteps(NULL), m_pCourse(NULL),
-		m_pTrail(NULL), m_pCharacter(NULL), m_SetEnv(),
+		m_pTrail(NULL), m_pCharacter(NULL), m_SetEnv(), m_SetPref(),
 		m_sSongGroup(""), m_SortOrder(SortOrder_Invalid),
 		m_sSoundPath(""), m_vsScreensToPrepare(), m_iWeightPounds(-1),
 		m_iGoalCalories(-1), m_GoalType(GoalType_Invalid),
@@ -92,6 +92,7 @@ public:
 	Trail*		m_pTrail;
 	Character*	m_pCharacter;
 	std::map<RString,RString> m_SetEnv;
+	std::map<RString,RString> m_SetPref;
 	RString		m_sSongGroup;
 	SortOrder	m_SortOrder;
 	RString		m_sSoundPath;	// "" for no sound