[MySQL][Other]Condition Pushdown for ha_partition 0.1 released

I'm pleased to announce the release of Condition Pushdown for ha_partition version 0.1.

This release is a patch file for MySQL's table partitioning feature. (ndb is excluded)
This patch file works to add methods("cond_push" and "cond_pop") to ha_partition. As a result, every storage engine's table that use table partitioning can get condition-pushdown through ha_partition.

There was no problem because only ndb supported engine-condition-pushdown up to now.
This patch was needed because the Spider storage engine supported engine-condition-pushdown recently.


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