Bug 32893 Workspace Compatibility Problems 2.0 -> 2.1
Build 2.1 RC1 This PR collects problems related to opening a 2.0 workspace with 2.1.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/PreferenceConstants.java
*/
	public final static String EDITOR_PRINT_MARGIN_COLOR= "printMarginColor"; 
	/**
	 * Print margin column. Int value.
	 */
	public final static String EDITOR_PRINT_MARGIN_COLUMN= "printMarginColumn"; 
	/**
	 * A named preference that holds the color used for the find/replace scope.
	 * <p>
	 * Value is of type <code>String</code>. A RGB color value encoded as a string
	 * using class <code>PreferenceConverter</code>
	 * </p>
	 * 
	 * @see org.eclipse.jface.resource.StringConverter
	 * @see org.eclipse.jface.preference.PreferenceConverter
	 */
	public final static String EDITOR_FIND_SCOPE_COLOR= AbstractTextEditor.PREFERENCE_COLOR_FIND_SCOPE;
	/**
	 * A named preference that specifies if the editor uses spaces for tabs.
	 * <p>
	 * Value is of type <code>Boolean</code>. If <code>true</code>spaces instead of tabs are used
	 * in the editor. If <code>false</code> the editor inserts a tab character when pressing the tab
	 * key.
	 * </p>
	 */
	public final static String EDITOR_SPACES_FOR_TABS= "spacesForTabs"; 
	/**
	 * A named preference that holds the number of spaces used per tab in the editor.
	 * <p>
	 * Value is of type <code>Int</code>: positive int value specifying the number of