Implement all methods of 'statement' class

[Sannis]

[Sannis]

The progress can be seen in the statements branch.
Compare master...statements.

[Sannis]

Implement MysqlStatement::BindParamsSync() in 512bf04, 9dd0cc7, e6a943a.
Implement MysqlStatement::SendLongDataSync() in 22d2fb4.

[Sannis]

Sync fetching result sets from prepared statement merged from pull request #142.

[Sannis]

Merged.