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
* Value is of type <code>Boolean</code>. If <code>true</code> multi line comments are rendered
	 * in bold. If <code>false</code> the are rendered using no font style attribute.
	 * </p>
	 */
	public final static String EDITOR_MULTI_LINE_COMMENT_BOLD= IJavaColorConstants.JAVA_MULTI_LINE_COMMENT + EDITOR_BOLD_SUFFIX; 
	/**
	 * A named preference that holds the color used to render single line comments.
	 * <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_SINGLE_LINE_COMMENT_COLOR= IJavaColorConstants.JAVA_SINGLE_LINE_COMMENT;
	/**
	 * A named preference that controls whether sinle line comments are rendered in bold.
	 * <p>
	 * Value is of type <code>Boolean</code>. If <code>true</code> single line comments are rendered
	 * in bold. If <code>false</code> the are rendered using no font style attribute.
	 * </p>
	 */
	public final static String EDITOR_SINGLE_LINE_COMMENT_BOLD= IJavaColorConstants.JAVA_SINGLE_LINE_COMMENT + EDITOR_BOLD_SUFFIX; 
	/**
	 * A named preference that holds the color used to render java keywords.
	 * <p>
	 * Value is of type <code>String</code>. A RGB color value encoded as a string
	 * using class <code>PreferenceConverter</code>
	 * </p>