- It was allowed to CREATE TABLE which was not in NDB, but
   creating a view on that table failed since the table has to
   be opened as part of the create.
 - Make it possible to workaround this with a new "ndbinfo_offline"
   mode which allows tables to be created and opened although they
   don't exist or have different table definition. This is exactly
   the same behaviour as when NDBCLUSTER is disabled. SELECTs on a
   table which has been opened in offline mode, return no rows
   and a warning is printed(like before).