Table#hashes sorts rows by html order rather than rowIndex

[jkotests]

Given the table:

<table cellspacing="0" cellpadding="5" rules="groups" frame="box" border="1" id="axis_example" summary="Hugh Laurie made more money than Gregory House in both March and April of 2008.">
<caption>Income tax information for Gregory House and Hugh Laurie</caption>
<colgroup width="25%" align="left"></colgroup>
<colgroup width="25%" span="3" align="right"></colgroup>
<thead id="tax_headers">
    <tr style="border-bottom: 1px solid black;" class="dark" id="thead_row_1">
        <th></th>
        <th id="before_tax" axis="cash" abbr="Before tax">Before income tax</th>
        <th id="tax" axis="cash" abbr="Tax">Income tax</th>
        <th id="after_tax" axis="cash" abbr="After tax">After income tax</th>
    </tr>
</thead>
<tfoot id="tax_totals">
    <tr class="dark" id="tfoot_row_1">
        <th axis="sum">Sum</th>
        <td headers="before_tax">24 349</td>
        <td headers="tax">5 577</td>
        <td headers="after_tax">18 722</td>
    </tr>
</tfoot>
<tbody id="first">
    <tr id="march">
        <th id="d1" axis="date" scope="rowgroup">March 2008</th>
        <th></th>
        <th></th>
        <th></th>
    </tr>
    <tr id="gregory">
        <td id="p1" abbr="Dr. House">Gregory House</td>
        <td headers="before_tax p1 d1">5 934</td>
        <td headers="tax p1 d1">1 347</td>
        <td headers="after_tax p1 d1">4 587</td>
    </tr>
    <tr id="hugh">
        <td id="p2" abbr="Laurie">Hugh Laurie</td>
        <td headers="before_tax p2 d1">6 300</td>
        <td headers="tax p2 d1">1 479</td>
        <td headers="after_tax p2 d1">4 821</td>
    </tr>
</tbody>
<tbody name="second" id="second">
    <tr>
        <th id="d2" axis="date" scope="rowgroup">April 2008</th>
        <th></th>
        <th></th>
        <th></th>
    </tr>
    <tr>
         <td id="p3" abbr="Dr. House">Gregory House</td>
         <td headers="before_tax p3 d2">5 863</td>
         <td headers="tax p3 d2">1 331</td>
         <td headers="after_tax p3 d2">4 532</td>
    </tr>
    <tr>
        <td id="p4" abbr="Laurie">Hugh Laurie</td>
        <td headers="before_tax p4 d2">6 252</td>
        <td headers="tax p4 d2">1 420</td>
        <td headers="after_tax p4 d2">4 <span id="cell-child">832</span></td>
    </tr>
</tbody>
</table>

Then the code:

browser.table(:id => "axis_example").hashes

Returns:

[
  {""=>"Sum", "Before income tax"=>"24 349", "Income tax"=>"5 577", "After income tax"=>"18 722"}, 
  {""=>"March 2008", "Before income tax"=>"", "Income tax"=>"", "After income tax"=>""}, 
  {""=>"Gregory House", "Before income tax"=>"5 934", "Income tax"=>"1 347", "After income tax"=>"4 587"},
  {""=>"Hugh Laurie", "Before income tax"=>"6 300", "Income tax"=>"1 479", "After income tax"=>"4 821"}, 
  {""=>"April 2008", "Before income tax"=>"", "Income tax"=>"", "After income tax"=>""}, 
  {""=>"Gregory House", "Before income tax"=>"5 863", "Income tax"=>"1 331", "After income tax"=>"4 532"}, 
  {""=>"Hugh Laurie", "Before income tax"=>"6 252", "Income tax"=>"1 420", "After income tax"=>"4 832"}
]

Instead of:

[
  { "" => "March 2008",     "Before income tax" => "",       "Income tax" => "",      "After income tax" => ""      },
  { "" => "Gregory House",  "Before income tax" => "5 934",  "Income tax" => "1 347", "After income tax" => "4 587" },
  { "" => "Hugh Laurie",    "Before income tax" => "6 300",  "Income tax" => "1 479", "After income tax" => "4 821" },
  { "" => "April 2008",     "Before income tax" => "",       "Income tax" => "",      "After income tax" => ""      },
  { "" => "Gregory House",  "Before income tax" => "5 863",  "Income tax" => "1 331", "After income tax" => "4 532" },
  { "" => "Hugh Laurie",    "Before income tax" => "6 252",  "Income tax" => "1 420", "After income tax" => "4 832" },
  { "" => "Sum",            "Before income tax" => "24 349", "Income tax" => "5 577", "After income tax" => "18 722"},
]

Table#hashes is currently sorting based on the order that the trs appear in the html (unexpected). It should be based on the rowIndex (ie their actual display order).