WL#870: Allow to create temporary tables which are not replicated

In many cases temporary tables are used only for result replication and so
should not be replicated. But we never know it it advance if user is going to do 
SELECT ... INSERT from such table so we can't automatically decide if table
should be replicated or not.

We shall add some syntax for user to mark temporary tables which will not be
replicated, for example:

CREATE TEMPORARY LOCAL TABLE X(...)

Syntax should be clarified with Monty before starting.