[Win32] Enable monitor-specific scaling by default

By now, SWT had monitor-specific scaling on Windows disabled by default
and used the existing, single-zoom HiDPI support. There are good reasons
to now change the default of SWT to have monitor-specific scaling
enabled:
- Eclipse applications default to have monitor-specific scaling enabled
for several months now, so SWT and Eclipse default behaviors are
different
- With default JVM settings, pure SWT application have no proper scaling
as the existing HiDPI support requires DPI awareness "System" to
function properly whereas the JVM default is "PerMonitorV2" and requires
the application to scale on its own. So by default, SWT applications
currently have no scaling at all
- The feature has matured throughout the last year with it being the
default for Eclipse application for several months now.

This change adapts the SWT default to enable monitor-specific scaling on
Windows.

Author: HeikoKlare

bundles/org.eclipse.swt/Eclipse SWT/common/org/eclipse/swt/internal/DPIUtil.java

@@ -125,6 +125,10 @@ public static boolean isCustomAutoScale() {
 	return System.getProperty (SWT_AUTOSCALE) != null;
 }
 
+public static String getEffectiveAutoScaleValue() {
+	return autoScaleValue.toString();
+}
+
 /**
  * Returns {@code true} only if the current setup is compatible
  * with monitor-specific scaling. Returns {@code false} if:
@@ -168,7 +172,7 @@ public static boolean isMonitorSpecificScalingActive() {
 		return false;
 	}
 	String updateOnRuntimeValue = System.getProperty(SWT_AUTOSCALE_UPDATE_ON_RUNTIME);
-	return "force".equalsIgnoreCase(updateOnRuntimeValue) || "true".equalsIgnoreCase(updateOnRuntimeValue);
+	return !"false".equalsIgnoreCase(updateOnRuntimeValue);
 }
 
 public static int pixelToPoint(int size, int zoom) {
@@ -465,10 +469,7 @@ public static int getZoomForAutoscaleProperty (int nativeDeviceZoom) {
 
 public static void runWithAutoScaleValue(String autoScaleValue, Runnable runnable) {
 	AutoScale initialAutoScaleValue = DPIUtil.autoScaleValue;
-	// This method is used to adapt to the autoscale value used by the Equinox launcher,
-	// which currently defaults to "integer". So we need to use explicit "integer" default here
-	// until the Equinox launcher is adapted.
-	DPIUtil.autoScaleValue = AutoScaleCalculation.parseFrom(autoScaleValue == null ? "integer" : autoScaleValue);
+	DPIUtil.autoScaleValue = AutoScaleCalculation.parseFrom(autoScaleValue);
 	DPIUtil.deviceZoom = getZoomForAutoscaleProperty(nativeDeviceZoom);
 	try {
 		runnable.run();