improved zend-multibyte detection.

Zend/tests/multibyte/multibyte_encoding_004.phpt

@@ -2,9 +2,11 @@
 test for mbstring script_encoding for flex unsafe encoding (Shift_JIS)
 --SKIPIF--
 <?php
-ini_set("mbstring.script_encoding","SJIS");
-if (ini_set("mbstring.script_encoding","SJIS") != "SJIS") {
-	die("skip zend-multibyte is not available");
+if (!in_array("detect_unicode", array_keys(ini_get_all()))) {
+  die("skip Requires configure --enable-zend-multibyte option");
+}
+if (!extension_loaded("mbstring")) {
+  die("skip Requires mbstring extension");
 }
 ?>
 --INI--

Zend/tests/multibyte/multibyte_encoding_005.phpt

@@ -2,9 +2,11 @@
 encoding conversion from script encoding into internal encoding
 --SKIPIF--
 <?php
-ini_set("mbstring.script_encoding","SJIS");
-if (ini_set("mbstring.script_encoding","SJIS") != "SJIS") {
-	die("skip zend-multibyte is not available");
+if (!in_array("detect_unicode", array_keys(ini_get_all()))) {
+  die("skip Requires configure --enable-zend-multibyte option");
+}
+if (!extension_loaded("mbstring")) {
+  die("skip Requires mbstring extension");
 }
 ?>
 --INI--