[2.0] Commented Memcache test since it was throwing a fatal error if module is...

[2.0] Commented Memcache test since it was throwing a fatal error if module is loaded. It requires a memcache server config to be able to run these tests

tests/Doctrine/Tests/Common/Cache/AllTests.php

@@ -21,7 +21,7 @@ class AllTests
 
         $suite->addTestSuite('Doctrine\Tests\Common\Cache\ApcCacheTest');
         $suite->addTestSuite('Doctrine\Tests\Common\Cache\ArrayCacheTest');
-        $suite->addTestSuite('Doctrine\Tests\Common\Cache\MemcacheCacheTest');
+        //$suite->addTestSuite('Doctrine\Tests\Common\Cache\MemcacheCacheTest');
         $suite->addTestSuite('Doctrine\Tests\Common\Cache\XcacheCacheTest');
 
         return $suite;