MFH: fix pcre tests

ext/pcre/tests/backtrack_limit.phpt

@@ -1,5 +1,11 @@
 --TEST--
 Backtracking limit
+--SKIPIF--
+<?php 
+if (@preg_match_all('/\p{N}/', '0123456789', $dummy) === false) {
+	die("skip no support for \p support PCRE library");
+}
+?>
 --INI--
 pcre.backtrack_limit=2
 --FILE--

ext/pcre/tests/bug27103.phpt

@@ -1,5 +1,11 @@
 --TEST--
 Bug #27103 (preg_split('//u') incorrectly splits UTF-8 strings into octets)
+--SKIPIF--
+<?php
+if (@preg_match_all('/./u', "", $matches) === false) {
+	die("skip no utf8 support in PCRE library");
+}
+?>
 --FILE--
 <?php
 function iter($ar)

ext/pcre/tests/invalid_utf8.phpt

@@ -1,5 +1,11 @@
 --TEST--
 preg_replace() and invalid UTF8
+--SKIPIF--
+<?php
+if (@preg_match_all('/./u', "", $matches) === false) {
+	die("skip no utf8 support in PCRE library");
+}
+?>
 --FILE--
 <?php
 

ext/pcre/tests/pcre_anchored.phpt

@@ -1,5 +1,11 @@
 --TEST--
 A (PCRE_ANCHORED) modififer
+--SKIPIF--
+<?php 
+if (@preg_match_all('/\p{N}/', '0123456789', $dummy) === false) {
+	die("skip no support for \p support PCRE library");
+}
+?>
 --FILE--
 <?php
 

ext/pcre/tests/preg_replace2.phpt

@@ -1,5 +1,11 @@
 --TEST--
 preg_replace()
+--SKIPIF--
+<?php
+if (@preg_match_all('/./u', "", $matches) === false) {
+	die("skip no utf8 support in PCRE library");
+}
+?>
 --FILE--
 <?php
 

ext/pcre/tests/recursion_limit.phpt

@@ -1,5 +1,11 @@
 --TEST--
 PCRE Recursion limit
+--SKIPIF--
+<?php 
+if (@preg_match_all('/\p{N}/', '0123456789', $dummy) === false) {
+	die("skip no support for \p support PCRE library");
+}
+?>
 --INI--
 pcre.recursion_limit=2
 --FILE--