P128 CEEFAX 128 Sun 3 Apr 20:44/20        WALL STREET Close (Thu) Stock prices edged upward near the close of a quiet session in a cautious atmosphere. Advancing issues outnumbered declines bz about six to five and volume was 139.87 shares. For the first quarter of the year, the average chalked up a net gain of 49.23 points. * The M1 money supply has risen $6.3 billion to $766.76 billion. Long Bond 131 Indices 126