Description
   This returns the complete tree of extended dependencies of a single installed package.
  
   For instance, a real-world example.  package SOAP depends on Mail_Mime, HTTP_Request, Net_URL, Net_DIME.  package HTTP_Request depends on Net_URL, Net_Socket.  This method will return an array
   similar to:
  
   
| <?php
array(
    'pear.php.net' =>
        array(
            'mail_mime' =>
                array('name' => 'Mail_Mime',
                      'channel' => 'pear.php.net'),
            'http_request' =>
                array('name' => 'HTTP_Request',
                      'channel' => 'pear.php.net'),
            'net_url' =>
                array('name' => 'Net_URL',
                      'channel' => 'pear.php.net',
                      'min' => '1.0.12'),
            'net_dime' =>
                array('name' => 'Net_DIME',
                      'channel' => 'pear.php.net'),
            'net_socket' =>
                array('name' => 'Net_Socket',
                      'channel' => 'pear.php.net'),
        ),
);
?> | 
  
   Note that this should not be relied upon for exact dependencies.  In the example above, the
   returned dependency will be that of HTTP_Request upon Net_URL, which is stricter than SOAP's
   dependency upon Net_URL.  In other words, if there are two similar dependencies, the last
   one encountered will be returned.