Cleans up an SCA query context, freeing all dynamic memory
    associated with the query.

    Format

      SCA$QUERY_CLEANUP  query_context

1  –  Argument

 query_context
    type:       $SCA_QUERY_CONTEXT
    access:     read/write
    mechanism:  by reference

    An SCA query context to be cleaned up.

2  –  Condition Value Returned

    SCA$_NORMAL           The query context has been successfully
                          cleaned up.

3  –  Description

    The SCA$QUERY_CLEANUP routine cleans up an SCA query context,
    freeing all dynamic memory associated with the query.

    This routine will become obsolete in a future version of SCA.