Tweaked my.cnf to avoid problem with mysql 5.6+
 * The variable table_cache is not recognized anymore by mysql under 5.6+
Updated how table_open_cache (and table_cache) are handled
 * The attribute table_open_cache default value is not the one set for table_cache.
 * Using the right parameter name depending on the version in my.cnf but
   both points to table_open_cache.