Bug 95974 [Preferences] Line Delimiter preference page causes full build without user change
N20050519-0010 Line Delimiter preference page causes full build without user change - new workspace, import plugin org.junit as source - Go to Window > Preferences > General > Editors - without changing anything in the dialog, press OK => A "Setting Encoding" job is started, followed by a full build. Should not build when the user did not change anything.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/ide/dialogs/ResourceEncodingFieldEditor.java
* @param parent the parent of the field editor's control
	 * @param charsetResource must be an <code>IContainer</code> or an <code>IFile</code>.
     * 
	 * @see org.eclipse.core.resources.IContainer#getDefaultCharset()
	 * @see org.eclipse.core.resources.IFile#getCharset()
	 */
	public ResourceEncodingFieldEditor(String labelText, Composite parent, IResource charsetResource) {
		super();
        Assert.isTrue(charsetResource instanceof IContainer || charsetResource instanceof IFile);
		setLabelText(labelText);
		this.resource = charsetResource;
		createControl(parent);
	}
	/* (non-Javadoc)
	 * @see org.eclipse.ui.internal.ide.dialogs.AbstractEncodingFieldEditor#getStoredValue()
	 */
	protected String getStoredValue() {
		try {
			if (resource instanceof IContainer)
				return ((IContainer) resource).getDefaultCharset(false);
			return ((IFile) resource).getCharset(false);
		} catch (CoreException e) {
			IDEWorkbenchPlugin.log(IDEWorkbenchMessages.ResourceEncodingFieldEditor_ErrorLoadingMessage, e.getStatus());
			return WorkbenchEncoding.getWorkbenchDefaultEncoding();
		}
	}
	/* (non-Javadoc)
	 * @see org.eclipse.jface.preference.FieldEditor#doStore()
	 */
	protected void doStore() {