- Fix compilation with Qt 4.4

- Fix compilation with older boost libraries

src/torrentpersistentdata.h

@@ -32,13 +32,19 @@
 #define TORRENTPERSISTENTDATA_H
 
 #include <QSettings>
-#include <QHash>
 #include <QVariant>
 #include <libtorrent/magnet_uri.hpp>
-
 #include "qtorrenthandle.h"
 #include "misc.h"
 
+#ifdef QT_4_5
+#include <QHash>
+#else
+#include <QMap>
+#define QHash QMap
+#define toHash toMap
+#endif
+
 class TorrentTempData {
 public:
   static bool hasTempData(QString hash) {
@@ -256,4 +262,8 @@ public:
   }
 
 };
+
+#undef QHash
+#undef toHash
+
 #endif // TORRENTPERSISTENTDATA_H