ZF-4884: FIXME tag and no used value in save() of Zend_Cache_Backend_File

Description

As first, there is a FIXME tag in save() function of Zend_Cache_Backend_File. _log() function should be added instead of the tag as following.

As second, $return and $firstTry are not used.

Comments

Solved in SVN r12479

Changing issues in preparation for the 1.7.0 release.