JCK cannot update to the recent sigtest 3.0 b11
Recent sigtest refactoring in b11 substituted static field with an instance getter/setter. This change made JCK libs incompatible.

Was:
    public static boolean isConstantValuesTracked = true;

Now:
    private boolean isConstantValuesTracked = true;

    public boolean isConstantValuesTracked() {
        return isConstantValuesTracked;
    }
    
    public void setConstantValuesTracked(boolean t) {
        isConstantValuesTracked = t;
    }