Bug 129887 "system settings have changed" dialog - why
I20060228-1207 - had a project, clicked 'Replace With...' > 'Another branch or revision' in the project's context menu - two (!) dialogs popped up over each other - one warning me about replacing locally changed resources (ok) - the second telling me that the system settings have changed and I needed to restart the workbench. No further explanation was given. This seems pretty harsh; if we really need to restart the workbench, we should explain some more! We should also explain the consequences of pressing the "No" button (don't restart). I have no idea why I suddenly need to restart. I didn't change any system settings AFAIK, so perhaps the problems is more that an event was sent out on the SWT side of it. Please dispatch as needed.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/IDEWorkbenchAdvisor.java
private static final String WORKBENCH_PREFERENCE_CATEGORY_ID = "org.eclipse.ui.preferencePages.Workbench"; 
	/**
	 * The dialog setting key to access the known installed features since the
	 * last time the workbench was run.
	 */
	private static final String INSTALLED_FEATURES = "installedFeatures"; 
	private static IDEWorkbenchAdvisor workbenchAdvisor = null;
	/**
	 * Event loop exception handler for the advisor.
	 */
	private IDEExceptionHandler exceptionHandler = null;
	/**
	 * Contains the workspace location if the -showlocation command line
	 * argument is specified, or <code>null</code> if not specified.
	 */
	private String workspaceLocation = null;
	/**
	 * Ordered map of versioned feature ids -> info that are new for this
	 * session; <code>null</code> if uninitialized. Key type:
	 * <code>String</code>, Value type: <code>AboutInfo</code>.
	 */
	private Map newlyAddedBundleGroups;
	/**
	 * Array of <code>AboutInfo</code> for all new installed features that
	 * specify a welcome perspective.
	 */
	private AboutInfo[] welcomePerspectiveInfos = null;
	/**