- Pass prepared statement size to the helper class to prevent runtime resizing.
- Rename CheckValidIndex -> AssertValidIndex
- Cached prepared size on the worker pool as it's shared among all connections
- Cached query data only for each connection, done lookup in map instead of possibly creating a new element
- Kill the prepared statement map, and store raw sql string on the MySQLPreparedStatement class
(This info is only used for logging, and there is no need of keeping a second container just for it)
* Prevents double deletion of MySQLConnection after errors
* The object stays valid after an error and will wait for a reconnect
* Also crash the server if 5 reconnects fail
* Corrects an issue where the server was crashed after one reconnect
because mysql_thread_id was invoked with an invalid handle
