Control Data Corp is at last seen as credit-worthy borrower again, and the company’s group of lenders, led by Bank of America, has extended CDC’s credit agreement, due to expire on Saturday, and offered it expanded borrowing privileges, although the new agreement remains hedged around with covenants. It now has $125m available to it, and the sum will be increased to $145m if its operating profits for the .lh 6third and fourth quarters meet pre-set targets.