Updated GPE Changes Property Variables

[richip]

It seems the current release version of GPE changed the Eclipse property names for several GPE properties as well as the name of the GDT settings file. The trend appears to be a change from the domain com.google to com.gwtplugins. The changes are reflected by the following (untested) patch:

diff --git a/gwt-gradle-plugin/src/main/java/de/richsource/gradle/plugins/gwt/GwtEclipsePlugin.java b/gwt-gradle-plugin/src/main/java/de/richsource/gradle/plugins/gwt/GwtEclipsePlugin.java
index 9971675..1ef5265 100644
--- a/gwt-gradle-plugin/src/main/java/de/richsource/gradle/plugins/gwt/GwtEclipsePlugin.java
+++ b/gwt-gradle-plugin/src/main/java/de/richsource/gradle/plugins/gwt/GwtEclipsePlugin.java
@@ -36,10 +36,10 @@ import de.richsource.gradle.plugins.gwt.eclipse.internal.GdtOptionsImpl;
 // TODO choose different name as this is no real plugin
 public class GwtEclipsePlugin {
 
-	public static final String ECLIPSE_NATURE = "com.google.gwt.eclipse.core.gwtNature";
-	public static final String ECLIPSE_BUILDER_PROJECT_VALIDATOR = "com.google.gwt.eclipse.core.gwtProjectValidator";
-	public static final String ECLIPSE_BUILDER_WEBAPP_VALIDATOR = "com.google.gdt.eclipse.core.webAppProjectValidator";
-	public static final String ECLIPSE_GWT_CONTAINER = "com.google.gwt.eclipse.core.GWT_CONTAINER";
+	public static final String ECLIPSE_NATURE = "com.gwtplugins.gwt.eclipse.core.gwtNature";
+	public static final String ECLIPSE_BUILDER_PROJECT_VALIDATOR = "com.gwtplugins.gwt.eclipse.core.gwtProjectValidator";
+	public static final String ECLIPSE_BUILDER_WEBAPP_VALIDATOR = "com.gwtplugins.gdt.eclipse.core.webAppProjectValidator";
+	public static final String ECLIPSE_GWT_CONTAINER = "com.gwtplugins.gwt.eclipse.core.GWT_CONTAINER";
 	public static final String GENERATE_GDT_TASK = "generateGdt";
 	
 	private static final Logger logger = Logging.getLogger(GwtEclipsePlugin.class);
@@ -73,7 +73,7 @@ public class GwtEclipsePlugin {
 				configureGenerateGdt(gdtExtension);
 				
 				GenerateGdt generateGdt = project.getTasks().create(GENERATE_GDT_TASK, GenerateGdt.class);
-				generateGdt.setSettingsFile(project.file(".settings/com.google.gdt.eclipse.core.prefs"));
+				generateGdt.setSettingsFile(project.file(".settings/com.gwtplugins.gdt.eclipse.core.prefs"));
 				project.getTasks().getByName(EclipsePlugin.getECLIPSE_TASK_NAME()).dependsOn(generateGdt);
 				
 				project.afterEvaluate(new Action<Project>() {