Bug 310446 [LinkedResources] "Preferences > Linked Resources > New..." should not show "Variable..."
I20100425-2000 "Preferences > Linked Resources": The "New..." and "Edit..." dialogs should not show the "Variable..." button. When I select a variable, the "New Variable" dialog show an error (Path must be absolute.), and when I try to click "Extend...", nothing happens.
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;
    /**