CREATE/DROP SCHEMA considered harmful

I think the create and drop schema commands should throw a "not
implemented" error, rather than fiddle around with databases. Consider
users that try these commands just on luck.

Btw., the grammar for these commands isn't implemented correctly either.


-- 
Peter Eisentraut                  Sernanders väg 10:115
peter_e@gmx.net                   75262 Uppsala
http://yi.org/peter-e/            Sweden