#479 Add `LIKE tablename` option to DISTRIBUTE Clause

[David E. Wheeler]

As discussed in Bug #478, it would be nice, if the grammar permits, to allow a LIKE phrase to be used in the DISTRIBUTE clause when the CREATE TABLE statement uses the LIKE clause. Example:

CREATE TABLE child (
    LIKE parent INCLUDING ALL
)
DISTRIBUTE LIKE parent;

This will allow the DISTRIBUTE BY algorithm specified for the parent table to be copied to the child table.