Use Q_SIGNALS instead of signals

dbquery/dbquery.h

@@ -74,7 +74,7 @@ public:
     virtual void abort();
     virtual QUrl webUrl(const QModelIndex &index);
 
-signals:
+Q_SIGNALS:
     void resultsAvailable();
     void coverAvailable(const QModelIndex &index);
     void lyricsAvailable(const QModelIndex &index);

gui/notificationmodel.h

@@ -26,7 +26,7 @@ public:
     static const QIcon &errorIcon();
     static const QIcon &debugIcon();
 
-signals:
+Q_SIGNALS:
 
 public Q_SLOTS:
 

gui/picturepreviewselection.h

@@ -64,7 +64,7 @@ public Q_SLOTS:
     void convertSelected();
     void setCoverButtonsHidden(bool hideCoverButtons);
 
-signals:
+Q_SIGNALS:
     void pictureChanged();
 
 protected:

gui/tagedit.h

@@ -55,7 +55,7 @@ public Q_SLOTS:
     void invalidate();
     void setCoverButtonsHidden(bool hideCoverButtons);
 
-signals:
+Q_SIGNALS:
     void returnPressed();
 
 private:

gui/tageditorwidget.h

@@ -79,7 +79,7 @@ public Q_SLOTS:
     void applySettingsFromDialog();
     void addParsingNotificationLine(const QString &line);
 
-signals:
+Q_SIGNALS:
     /// \brief Emitted when loading the next file has been triggered.
     void nextFileSelected();
     /// \brief Emitted to show a status message.

gui/tagfieldedit.h

@@ -59,7 +59,7 @@ public Q_SLOTS:
     void restore();
     void setCoverButtonsHidden(bool hideCoverButtons);
 
-signals:
+Q_SIGNALS:
     void returnPressed();
 
 protected:

renamingutility/renamingengine.h

@@ -77,7 +77,7 @@ public Q_SLOTS:
     bool applyChangings();
     void abort();
 
-signals:
+Q_SIGNALS:
     void previewGenerated();
     void changingsApplied();
     void progress(int itemsProcessed, int errorsOccured);