fix tar front controller tests for php6

ext/phar/tests/tar/files/frontcontroller12.phar.inc

@@ -3,13 +3,13 @@
 $a = new Phar(dirname(__FILE__) . '/frontcontroller12.phar.tar');
 $a['index.php'] = '<?php
 var_dump($_SERVER["PHP_SELF"]);
-var_dump($_SERVER["SCRIPT_NAME"]);
-var_dump($_SERVER["SCRIPT_FILENAME"]);
-var_dump($_SERVER["REQUEST_URI"]);
-var_dump($_SERVER["PHAR_PHP_SELF"]);
-var_dump($_SERVER["PHAR_SCRIPT_NAME"]);
-var_dump($_SERVER["PHAR_SCRIPT_FILENAME"]);
-var_dump($_SERVER["PHAR_REQUEST_URI"]);
+var_dump($_SERVER[b"SCRIPT_NAME"]);
+var_dump($_SERVER[b"SCRIPT_FILENAME"]);
+var_dump($_SERVER[b"REQUEST_URI"]);
+var_dump($_SERVER[b"PHAR_PHP_SELF"]);
+var_dump($_SERVER[b"PHAR_SCRIPT_NAME"]);
+var_dump($_SERVER[b"PHAR_SCRIPT_FILENAME"]);
+var_dump($_SERVER[b"PHAR_REQUEST_URI"]);
 ';
 $a->setStub('<?php
 Phar::mungServer(array("PHP_SELF", "SCRIPT_NAME", "SCRIPT_FILENAME", "REQUEST_URI"));

ext/phar/tests/tar/files/frontcontroller3.phar.inc

@@ -7,7 +7,7 @@ $a['a.phps'] = '<?php function hio(){}';
 $a->setStub('<?php
 function s($a)
 {
-    static $b = array("/hi" => "a.phps");
+    static $b = array(b"/hi" => b"a.phps");
     if (isset($b[$a])) return $b[$a];
     return $a;
 }

ext/phar/tests/tar/files/frontcontroller4.phar.inc

@@ -7,7 +7,7 @@ $a['a.phps'] = '<?php function hio(){}';
 $a->setStub('<?php
 function s($a)
 {
-    static $b = array("/hi" => false);
+    static $b = array(b"/hi" => false);
     if (isset($b[$a])) return $b[$a];
     return $a;
 }

ext/phar/tests/tar/frontcontroller21.phar.phpt

@@ -14,7 +14,7 @@ files/frontcontroller12.phar.tar
 --EXPECTHEADERS--
 Content-type: text/html; charset=UTF-8
 --EXPECTF--
-string(10) "/index.php"
+%unicode|string%(10) "/index.php"
 string(10) "/index.php"
 string(%d) "phar://%sfrontcontroller21.phar.php/index.php"
 string(18) "/index.php?test=hi"