fix the last remaining failing test (explicitly pass in SKIP_DOTS to directory iterator)

ext/phar/tests/cache_list/copyonwrite6.phar.phpt

@@ -4,6 +4,7 @@ Phar: copy-on-write test 6 [cache_list]
 default_charset=UTF-8
 phar.cache_list={PWD}/copyonwrite6.phar.php
 phar.readonly=0
+open_basedir=
 --SKIPIF--
 <?php if (!extension_loaded("phar")) die("skip"); ?>
 --FILE_EXTERNAL--
@@ -24,4 +25,4 @@ array(2) {
 phar://%scopyonwrite6.phar.php%cfile1 file1
 phar://%scopyonwrite6.phar.php%cfile2 file2
 phar://%scopyonwrite6.phar.php%chi hi
-ok
+ok

ext/phar/tests/cache_list/files/write6.phar.inc

@@ -10,7 +10,7 @@ $d = dirname(__FILE__) . "/copyonwrite6";
 mkdir($d);
 file_put_contents($d . "/file1", "file1\n");
 file_put_contents($d . "/file2", "file2\n");
-var_dump($phar->buildFromIterator(new RecursiveDirectoryIterator($d),$d));
+var_dump($phar->buildFromIterator(new RecursiveDirectoryIterator($d, RecursiveDirectoryIterator::SKIP_DOTS),$d));
 $phar2 = new Phar(__FILE__);
 $arr = array();
 foreach ($phar2 as $name => $file) {