What "internal" really means here, is queries that operate on the system tables.
Up until now, there wasn't really an issue because we weren't really checking
on this flag, and the internal calls were all unimplemented.
Now that we are about to hook up the internal calls, leaving this state marked
as internal will lead us to fail when we try to issue statements - like create
table - that are not, and will not be implemented in their internal
counterparts.
Signed-off-by: Glauber Costa <glommer@cloudius-systems.com>
fe6be361ba