Bug 298835 Merge e4 Project Path Variable back into the 3.6 stream
The virtual folder and filters changes are already in 3.6, the project path variable changes in e4 still remains to be merged.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/dialogs/PathVariableDialog.java
private Button okButton;
    private Label variableNameLabel;
    private Label variableValueLabel;
    
    private Label variableResolvedValueLabel;
    private Text variableNameField;
    private Text variableValueField;
    private Label variableResolvedValueField;
    private Button fileButton;
    private Button folderButton;
    private Button variableButton;
    /**
     * This dialog type: <code>NEW_VARIABLE</code> or
     * <code>EXISTING_VARIABLE</code>.
     */
    private int type;
    /**
     * The type of variable that can be edited in this dialog.
     * <code>IResource.FILE</code> or <code>IResource.FOLDER</code>
     */
    private int variableType;
    /**
     * The name of the variable being edited.
     */
    private String variableName;