Merge branch 'PHP-5.5' into PHP-5.6

* PHP-5.5:
  make sure that we don't truncate the stack trace and cause false test failures when the test is executed in a directory with long path

run-tests.php

@@ -240,6 +240,7 @@ $ini_overwrites = array(
 		'ignore_repeated_errors=0',
 		'precision=14',
 		'memory_limit=128M',
+		'log_errors_max_len=0',
 		'opcache.fast_shutdown=0',
 		'opcache.file_update_protection=0',
 	);