Partial JDBC 4.3 support

JDBC 4.3 specification joined

To be implemented :

Statement changes :

• String enquoteIdentifier(String identifier, Boolean alwaysQuote) throws SQLException
• String enquoteLiteral(String val) throws SQLException
• String enquoteNCharLiteral(String val) throws SQLException
• boolean isSimpleIdentifier(String identifier) throws SQLException

Sharding doesn't have any current implementation on MariaDB, so default implementation that indicate not supporting sharding is ok.

Missing java 9 requirement :
Java 9 add Builder constructor (ConnectionBuilder, XAConnectionBuilder), permitting building easier configuration Object. Those are new interface, so requiring java 9. This will be added with a new 3.x release.