Bug 53565 Improve manual builds
Entering to track improvments to the manual (i.e. non-automatic) builds. We propose to make the build story more useful by providing "targeted builds" which have the flavor of make (or Ant) builds where the user says what projects they want to end up with in a "built" state and letting the system figure out what set of prerequisite projects need to be taken into account. By allowing the user to tell us which project(s) are important to them, we give them a powerful tool to control how much work gets done when they say "build".
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/ChooseWorkspaceData.java
*/
	public String getSelection() {
		return selection;
	}
	/**
	 * Return an array of recent workspaces sorted with the most recently used at
	 * the start.
	 */
	public String[] getRecentWorkspaces() {
		return recentWorkspaces;
	}
	/**
	 * The argument workspace has been selected, update the receiver.  Does not
	 * persist the new values.
	 */
	public void workspaceSelected(String dir) {
		
		
		selection = dir;
	}
	/**
	 * Update the persistent store.  Call this function after the currently selected
	 * value has been found to be ok.
	 */
	public void writePersistedData() {
		Location configLoc = Platform.getConfigurationLocation();
		if (configLoc == null || configLoc.isReadOnly())
			return;
		URL persUrl = getPersistenceUrl(configLoc.getURL(), true);
		if (persUrl == null)