Unwarranted "Circular property definition" v2

[PayBas]

Running in 1.2.0

Running the following Test Unit fails but should not. It should be possible to reference the same property twice in another property as this is not a circular reference.

@Test
public void propertyIncludesAnotherPropertyMoreThanOnceWithIntermediaries() throws MojoFailureException {
    Properties properties = new Properties();
    properties.setProperty("p1", "value");
    properties.setProperty("p2", "${p1}");
    properties.setProperty("p3", "${p2} ${p2}");

    String value = resolver.getPropertyValue("p3", properties, new Properties());

    assertEquals("value value", value);
}

Instead, we get:

Circular property definition: p3=${p2} ${p2} -> p2=${p1} -> p1=value -> p2=${p1}

Which obviously isn't true.

Related to #27