Bug 304239 move each core application service to its own package
In M4, some services have their own package, others are provided in core.services. Boris and I talked about moving each service (API) to its own package. Reasons are: - aids with discoverability - helps separate application services from other public API in the core.services package (such as IDisposable, JSONObject) - helps to emphasize that services can be setup and consumed individually - will make it easier to move to separate bundles if that is ever needed This means moving Adapter, Logger, IStatusHandler to their own packages.
bundles/org.eclipse.e4.ui.workbench/src/org/eclipse/e4/workbench/ui/internal/Activator.java
* Get the default activator.
	 * 
	 * @return a BundleActivator
	 */
	public static Activator getDefault() {
		return activator;
	}
	/**
	 * @return the bundle object
	 */
	public Bundle getBundle() {
		return context.getBundle();
	}
	/**
	 * @return the PackageAdmin service from this bundle
	 */
	public PackageAdmin getBundleAdmin() {
		if (pkgAdminTracker == null) {
			if (context == null)
				return null;
			pkgAdminTracker = new ServiceTracker(context, PackageAdmin.class.getName(), null);
			pkgAdminTracker.open();
		}
		return (PackageAdmin) pkgAdminTracker.getService();
	}
	/**
	 * @param bundleName
	 *            the bundle id
	 * @return A bundle if found, or <code>null</code>
	 */