Assorted minor changes

This call is not required before close() and it will prevent closing of writer
if write fails for some reason.

Issue #638: Oracle mode: incompatible regexp back-reference syntax

Partial fix for #495

Add JdbcPreparedStatement.executeLargeUpdate() with implementation delegating to old internal method

Fix for issue #311

Better getObject error message

SecureRandom is already synchronized

Return properly encoded UUID from SimpleResultSet.getBytes()

When an unsupported type is passed to getObject(int|String, Class) the
error message always says that "java.lang.Class" is unsupported instead
of the actual type.

TestFunctions less english dependent

Fix for issue #644: Year changing from negative -509 to a positive 510

SIGNAL function

added Javascript support for Triggers' source