add #CHARTSTYLE tag to Steps for .ssc files; Keyboard/Pad/whatever else you can think of, just keep it standardized

src/Steps.cpp

@@ -319,6 +319,7 @@ void Steps::DeAutogen( bool bCopyNoteData )
 		Decompress();	// fills in m_pNoteData with sliding window transform
 
 	m_sDescription		= Real()->m_sDescription;
+	m_sChartStyle		= Real()->m_sChartStyle;
 	m_Difficulty		= Real()->m_Difficulty;
 	m_iMeter		= Real()->m_iMeter;
 	copy( Real()->m_CachedRadarValues, Real()->m_CachedRadarValues + NUM_PLAYERS, m_CachedRadarValues );
@@ -372,6 +373,12 @@ void Steps::SetCredit( RString sCredit )
 	m_sCredit = sCredit;
 }
 
+void Steps::SetChartStyle( RString sChartStyle )
+{
+	DeAutogen();
+	m_sChartStyle = sChartStyle;
+}
+
 bool Steps::MakeValidEditDescription( RString &sPreferredDescription )
 {
 	if( int(sPreferredDescription.size()) > MAX_EDIT_STEPS_DESCRIPTION_LENGTH )