reduce XmlFile dependencies

stepmania/src/HighScore.cpp

@@ -14,6 +14,7 @@
 #include "PrefsManager.h"
 #include "GameConstantsAndTypes.h"
 #include "ThemeManager.h"
+#include "XmlFile.h"
 
 #define EMPTY_NAME			THEME->GetMetric ("HighScore","EmptyName")
 

stepmania/src/HighScore.h

@@ -13,8 +13,8 @@
 */
 
 #include "Grade.h"
-#include "XmlFile.h"
 
+struct XNode;
 struct HighScore
 {
 	CString	sName;	// name that shows in the machine's ranking screen

stepmania/src/Profile.cpp

@@ -32,6 +32,7 @@
 #include "crypto/CryptRand.h"
 #include "UnlockSystem.h"
 #include "CatalogXml.h"
+#include "XmlFile.h"
 
 //
 // Old file versions for backward compatibility

stepmania/src/Profile.h

@@ -17,13 +17,14 @@
 #include "Grade.h"
 #include <map>
 #include <set>
-#include "XmlFile.h"
 #include "HighScore.h"
 #include "TimeConstants.h"
 #include "SongUtil.h"	// for SongID
 #include "StepsUtil.h"	// for StepsID
 #include "CourseUtil.h"	// for CourseID
 
+struct XNode;
+
 //
 // Current file versions
 //