OpenACS

tree_sortkey (fixes concurrency problems and substantially improves

performance), drop group_elem_idx_container_idx (not useful) and

acs_objects_context_object_idx (which is superflous since there is an

identical unique constraint).  changes acs_objects_get_tree_sortkey to

be isstrict/iscachable fixes a bug in acs_objects_context_id_up_tr on

both oracle an postgres.

See http://openacs.org/forums/message-view?message_id=142769 for discussion.

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