[cvs-nhc98] patch applied (hat): More efficiency improvements

[Malcolm Wallace]

Wed Jan 25 12:26:59 PST 2006  tatd2
  * More efficiency improvements

    M ./src/hattools/HatDelta.hs -4 +3
    M ./src/hattools/NodeExp.hs -2 +2
    M ./src/hattools/Pretty.hs -2 +1