Check search limit depth with an inequality

[gturri]

Otherwise, when we check for equality, the test fails if the search starts beneath
the max depth.
Eg: if I have the page ns1:ns2:mypage in my wiki, and launch the xmlrpc query
getPagelist("ns1", "depth => 1"), without this patch, it retrieves mypage

The following test (made with the xml-rpc client dokuJClient) fails without this patch, but succeeds with it:

@org.junit.Test
public void testGetPagelistWithAMaxDepth() throws Exception {
    //Setting up test environmnent
    DokuJClient client = new DokuJClient(TestParams.url, TestParams.user, TestParams.password);
    client.putPage("ns:shallow_page", "some text");
    client.putPage("ns:subns:deep_page", "some text");

    Map<String, Object> options = new HashMap<String, Object>();
    options.put("depth", 1);

    //Testing
    List<PageDW> pages = client.getPagelist("ns", options);
    assertEquals(1, pages.size());
    assertEquals("ns:shallow_page", pages.get(0).id());

    pages = client.getPagelist("ns:subns", options);
    assertEquals(0, pages.size());
}

[splitbrain]

Merged. It would be cool if you could provide some unit tests for the search function(s) in our own test suite.