Merge branch 'PHP-5.5' into PHP-5.6

* PHP-5.5:
  Fix bug #69033 (Request may get env. variables from previous requests if PHP works as FastCGI)

ext/standard/basic_functions.c

@@ -3404,6 +3404,9 @@ static void php_putenv_destructor(putenv_entry *pe) /* {{{ */
 		unsetenv(pe->key);
 # elif defined(PHP_WIN32)
 		SetEnvironmentVariable(pe->key, NULL);
+# ifndef ZTS
+		_putenv_s(pe->key, "");
+# endif
 # else
 		char **env;