Fix xplane plugin header includes

* Include only what is used
* Use forward declaration when possible
* Sorted includes

refs #598

src/plugins/simulator/xplaneconfig/simulatorxplaneconfig.cpp

@@ -10,6 +10,8 @@
 #include "simulatorxplaneconfig.h"
 #include "simulatorxplaneconfigwindow.h"
 
+class QWidget;
+
 namespace BlackSimPlugin
 {
     namespace XPlane

src/plugins/simulator/xplaneconfig/simulatorxplaneconfig.h

@@ -15,6 +15,13 @@
 #include "blackgui/pluginconfig.h"
 #include "blackmisc/settingscache.h"
 
+#include <QObject>
+#include <QString>
+
+class QWidget;
+
+namespace BlackGui { class CPluginConfigWindow; }
+
 namespace BlackSimPlugin
 {
     namespace XPlane

src/plugins/simulator/xplaneconfig/simulatorxplaneconfigwindow.cpp

@@ -8,16 +8,24 @@
  */
 
 #include "simulatorxplaneconfigwindow.h"
-#include "ui_simulatorxplaneconfigwindow.h"
 #include "blackmisc/dbusserver.h"
-#include "blackmisc/simulation/xplane/xplaneutil.h"
 #include "blackmisc/fileutils.h"
-#include <QStringBuilder>
+#include "blackmisc/simulation/xplane/xplaneutil.h"
+#include "ui_simulatorxplaneconfigwindow.h"
+
+#include <QComboBox>
+#include <QCoreApplication>
+#include <QDialogButtonBox>
+#include <QDir>
 #include <QFileDialog>
+#include <QFlags>
 #include <QMessageBox>
-#include <QStandardPaths>
+#include <QPushButton>
+#include <QString>
 #include <QStringBuilder>
 
+class QWidget;
+
 using namespace BlackGui;
 
 namespace

src/plugins/simulator/xplaneconfig/simulatorxplaneconfigwindow.h

@@ -12,13 +12,16 @@
 #ifndef BLACKSIMPLUGIN_SIMULATOR_XPLANE_CONFIG_WINDOW_H
 #define BLACKSIMPLUGIN_SIMULATOR_XPLANE_CONFIG_WINDOW_H
 
-#include "simulatorxplaneconfig.h"
 #include "blackgui/pluginconfigwindow.h"
+#include "blackmisc/settingscache.h"
+#include "simulatorxplaneconfig.h"
+
+#include <QObject>
 #include <QScopedPointer>
 
-namespace Ui {
-class CSimulatorXPlaneConfigWindow;
-}
+class QWidget;
+
+namespace Ui { class CSimulatorXPlaneConfigWindow; }
 
 namespace BlackSimPlugin
 {

src/plugins/simulator/xplaneconfig/xplaneconfig.pro

@@ -1,6 +1,6 @@
 load(common_pre)
 
-QT       += core widgets dbus
+QT       += core dbus widgets
 
 TARGET = simulatorxplaneconfig
 TEMPLATE = lib