0047610: Simplify HQLProperty API adding convenient factory methods

    return Arrays.asList(
            new HQLProperty("product.weight", "weight"), 
            new HQLProperty("product.taxCategory.name", "taxcategoryname"));

    import static org.openbravo.mobile.core.model.HQLProperty.property;
    ...

    return HQLProperty.listOfProperties(
            property("product.weight", "weight"), 
            property("product.taxCategory.name", "taxcategoryname"));