add secondary screenshot code

stepmania/Themes/default/metrics.ini

@@ -2814,7 +2814,8 @@ NextBannerGroup=MenuUp,MenuRight,MenuRight
 NextBannerGroup2=MenuUp,MenuDown,MenuUp,MenuDown
 Hidden=
 RandomVanish=
-SaveScreenshot=MenuLeft+MenuRight
+SaveScreenshot1=MenuLeft+MenuRight
+SaveScreenshot2=
 CancelAllPlayerOptions=
 BackInEventMode=
 

stepmania/src/CodeDetector.cpp

@@ -50,7 +50,8 @@ const CString g_sCodeNames[CodeDetector::NUM_CODES] = {
 	"NextGame2",
 	"NextBannerGroup",
 	"NextBannerGroup2",
-	"SaveScreenshot",
+	"SaveScreenshot1",
+	"SaveScreenshot2",
 	"CancelAllPlayerOptions",
 	"BackInEventMode",
 };

stepmania/src/CodeDetector.h

@@ -64,7 +64,8 @@ public:
 		CODE_NEXT_GAME2,
 		CODE_BW_NEXT_GROUP,
 		CODE_BW_NEXT_GROUP2,
-		CODE_SAVE_SCREENSHOT,
+		CODE_SAVE_SCREENSHOT1,
+		CODE_SAVE_SCREENSHOT2,
 		CODE_CANCEL_ALL_PLAYER_OPTIONS,
 		CODE_BACK_IN_EVENT_MODE,
 		NUM_CODES	// leave this at the end

stepmania/src/ScreenEvaluation.cpp

@@ -1310,7 +1310,8 @@ void ScreenEvaluation::Input( const DeviceInput& DeviceI, const InputEventType t
 		HighScore &hs = m_HighScore[pn];
 
 
-		if( CodeDetector::EnteredCode(GameI.controller, CodeDetector::CODE_SAVE_SCREENSHOT) )
+		if( CodeDetector::EnteredCode(GameI.controller, CodeDetector::CODE_SAVE_SCREENSHOT1) ||
+			CodeDetector::EnteredCode(GameI.controller, CodeDetector::CODE_SAVE_SCREENSHOT2) )
 		{
 			if( !m_bSavedScreenshot[pn]  &&	// only allow one screenshot
 				PROFILEMAN->IsUsingProfile(pn) )