For primary keys info, the following commands are issued 
by TestDriverAction.performTest:
            drvSpec.getPrimaryKeys(tab);
            rs = drvSpec.getResultSet();
If rs == null OR rs is empty, an error message is issued 
("DatabaseMetaData is not implemented". However, a valid 
database, with rs != null,  might contain no PKeys so in 
this case there should be a warning, while rs == null is a 
genuine defect. We are writing spreadsheet drivers (this 
is somewhat unusual), so there are never PKeys. Same is 
true for Indexes and Procedures.
Proposed solution: in TestDriverAction.performTest(), set 
the flag ok=false ONLY when rs == null for PrimaryKeys, 
Indexes and Procedures.