Remove needless end line
UTF8 decoded JSON for PHP 5.2 and above
Enlarged thread_stack = 512K to fix mysql_upgrade error

Fixed: ERROR 1436 (HY000) at line 1904: Thread stack overrun:  7056
bytes used of a 131072 byte stack, and 128000 bytes needed.  Use 'mysqld
--thread_stack=#' to specify a bigger stack.
FATAL ERROR: Upgrade failed
Greater backward compatibility, guide for outdated server
Better specified variables, MySQL query LIMIT 1
Fixed URL rewrite while accessing files as robots.txt, sitemap.xml, humans.txt