[MySQL][Spider]Spider-2.9 released

I'm pleased to announce the release of Spider storage engine version 2.9(beta).
Spider is a Storage Engine for database sharding.
http://spiderformysql.com/

The main changes in this version are following.
- Add UDFs "spider_ping_table".
- Add table parameter "monitoring_kind", "monitoring_limit" and "monitoring_server_id".
- Add server parameter "spider_udf_table_mon_mutex_count".
  Add Spider's link fault monitor at this release.

Please see "99_change_logs.txt" in the download documents for checking other changes.
Thanks to shinichiro and merikonjatta for bug report.

Enjoy!