Description:
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When I call DateTime#setTime, it seems to be called the last modify method too. If I use date_time_set function, I get the same result.

This report is similar to Bug #41599, but differ from #41599 in using 'time'(01:02:03).

With PHP5.2.6, I get the expected result.

Reproduce code:
---------------
<?php
date_default_timezone_set('Asia/Tokyo');

$now = new DateTime('2008-10-10 01:02:03');
echo $now->format("Y-m-d H:i:s") . PHP_EOL;

$now->modify("1 day after");
echo $now->format("Y-m-d H:i:s") . PHP_EOL;

$now->modify("1 hour after");
echo $now->format("Y-m-d H:i:s") . PHP_EOL;

$now->setTime(0, 0, 0);
//date_time_set($now, 0, 0, 0);
echo $now->format("Y-m-d H:i:s") . PHP_EOL;


Expected result:
----------------
2008-10-10 01:02:03
2008-10-11 01:02:03
2008-10-11 02:02:03
2008-10-11 00:00:00


Actual result:
--------------
2008-10-10 01:02:03
2008-10-11 01:02:03
2008-10-11 02:02:03
2008-10-11 01:00:00