Added support for modulus operator in expressions

Issue 288: Some right outer join queries failed to produce the correct result or threw exceptions such as "column x must be in the group by list". Some right outer joins with invalid column referenced (typos) threw a NullPointerException instead of "column not found" exception.

New database setting EARLY_FILTER to allow table implementations to apply filter conditions early on.

Cluster: in a two node cluster, if cluster node stopped, and autocommit was enabled, then changes on the remaining cluster node didn't get committed automatically.

- the dialect detection will most likely be based on the URL, not on the class name
- 'declaration' is a much too generic term for 'set column = value'
- method names should start with a verb (getTableName instead of tableName)
- remove redundancy and unnecessary formatting in Javadocs (keep it as simple as possible)

Issue 265: Linked tables: auto-reconnect if the backside connection is lost (workaround for the MySQL problem that disconnects after 8 hours of inactivity).

Database-level connection settings could only be set in the database URL, but not using the Properties parameter of DriverManaget.getConnection(String url, Properties info).

TCP and PG server: if the default port is already in use, the services are now started on another free port (unless the port is explicitly set). This allows to start the H2 Console even if the TCP or PG servers are already running.

LIKE didn't use an index unless the right hand side was a literal or parameter. Now an index is used for LIKE CONCAT(?, '%').

Array literals with zero or one element were not be parsed correctly (Tomcat would reset the fields).

- Rename Declaration and related classes to UpdateColumn etc. 

- Increment by something that isn't a number directly didn't work