8135097: Unmap failure for executable memory on windows
Summary: Use 'pd_release_memory' for executable memory in os::pd_unmap_memory().
Reviewed-by: iklam, coleenp
<table>
<thead>
<tr>
<th id="first_header" style="text-align:left;"> First Header </th>
<th id="second_header" style="text-align:left;"> Second Header </th>
</tr>
</thead>
<tbody>
<tr>
<td style="text-align:left;"><p>Row 1 Cell 1 </p></td>
<td style="text-align:left;"><p>Row 1 Cell 2 </p></td>
</tr>
<tr>
<td style="text-align:left;"><p>Row 2 Cell 1 </p></td>
<td style="text-align:left;"><p>Row 2 Cell 2 </p></td>
</tr>
</tbody>
</table>