Fix build with Qt 5.1 development branch

QT_{BEGIN,END}_HEADER defines were removed.

src/lib/3rdparty/qftp.h

@@ -46,8 +46,6 @@
 #include "qurlinfo.h"
 #include <QtCore/qobject.h>
 
-QT_BEGIN_HEADER
-
 class QFtpPrivate;
 
 class QFtp : public QObject
@@ -156,6 +154,4 @@ private:
     Q_PRIVATE_SLOT(d, void _q_piFtpReply(int, const QString &))
 };
 
-QT_END_HEADER
-
 #endif // QFTP_H

src/lib/3rdparty/qurlinfo.h

@@ -46,8 +46,6 @@
 #include <QtCore/qstring.h>
 #include <QtCore/qiodevice.h>
 
-QT_BEGIN_HEADER
-
 QT_BEGIN_NAMESPACE
 
 
@@ -122,6 +120,4 @@ private:
 
 QT_END_NAMESPACE
 
-QT_END_HEADER
-
 #endif // QURLINFO_H