TV Playback: Make the default video zoom 'Off'.

Using auto detect as the default is potentially confusing for new users
as they may not expect that behaviour, it can be triggerred by false
positives and is not consistently applied (e.g. VDPAU).

mythtv/programs/mythfrontend/globalsettings.cpp

@@ -1811,12 +1811,12 @@ static HostComboBox *AdjustFill()
 {
     HostComboBox *gc = new HostComboBox("AdjustFill");
     gc->setLabel(QObject::tr("Zoom"));
+    for (int m = kAdjustFill_Off; m < kAdjustFill_END; ++m)
+        gc->addSelection(toString((AdjustFillMode)m), QString::number(m));
     gc->addSelection(toString(kAdjustFill_AutoDetect_DefaultOff),
                      QString::number(kAdjustFill_AutoDetect_DefaultOff));
     gc->addSelection(toString(kAdjustFill_AutoDetect_DefaultHalf),
                      QString::number(kAdjustFill_AutoDetect_DefaultHalf));
-    for (int m = kAdjustFill_Off; m < kAdjustFill_END; ++m)
-        gc->addSelection(toString((AdjustFillMode)m), QString::number(m));
     gc->setHelpText(QObject::tr(
                         "When enabled, these will apply a predefined "
                         "zoom to all video playback in MythTV."));