r9804: * doc/ref-ooddl.xml: minor changes to syntax and examples entries
for uniformity.
* doc/ref-oodml.xml: add examples for OODML.
* sql/oodml.lisp: ensure SELECT passes on its REFRESH argument
to FIND-ALL.
* sql/metaclasses.lisp: update docstrings.
* tests/test-init.lisp: change :db-constraints for emplid to
(:not-null :unique) as a temporary test for multiple column
constraints in DEF-VIEW-CLASS.
* tests/test-oodml.lisp: add tests for *DB-AUTO-SYNC* and
return type of (SETF SLOT-VALUE-USING-CLASS).