Enable the Aero-snap paths on Windows 8

Even if it's not actually aero snap the native resize is quite good.

src/Config.cpp

@@ -250,8 +250,8 @@ QQmlEngine *Config::qmlEngine() const
 void Config::Private::fixFlags()
 {
 #if defined(Q_OS_WIN)
-    if (QOperatingSystemVersion::current().majorVersion() < 10) {
+    if (QOperatingSystemVersion::current().majorVersion() < 8) {
-        // Aero-snap requires Windows 10
+        // Untested on Windows 7. Windows 8 doesn't have aerosnap but at least it can get native resizing
         m_flags = m_flags & ~Flag_AeroSnapWithClientDecos;
     } else {
         // Unconditional now

src/DockWidgetBase.cpp

@@ -154,7 +154,6 @@ void DockWidgetBase::setWidget(QWidgetOrQuick *w)
         setSizePolicy(w->sizePolicy());
 
     Q_EMIT widgetChanged(w);
-    setWindowTitle(uniqueName());
 }
 
 QWidgetOrQuick *DockWidgetBase::widget() const
@@ -556,7 +555,6 @@ void DockWidgetBase::Private::updateTitle()
     if (q->isFloating())
         q->window()->setWindowTitle(title);
 
-
     toggleAction->setText(title);
 }
 

src/private/WidgetResizeHandler.cpp

@@ -536,10 +536,6 @@ void WidgetResizeHandler::setupWindow(QWindow *window)
             SetWindowPos(wid, 0, 0, 0, 0, 0,
                          SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_FRAMECHANGED);
         });
-
-        // Show drop-shadow:
-        MARGINS margins = { 0, 0, 0, 1 }; // arbitrary, just needs to be > 0 it seems
-        DwmExtendFrameIntoClientArea(wid, &margins);
     }
 #else
     Q_UNUSED(window);

src/private/quick/FloatingWindowQuick.cpp

@@ -205,5 +205,7 @@ void FloatingWindowQuick::init()
 
     m_quickWindow->setFlags(windowFlags());
 
+    updateTitleAndIcon();
+
     m_quickWindow->show();
 }