[cvs-nhc98] patch applied (hat): Fixed bugs in hat-delta and hat-detect. Began to get cycle checking working in hat-delta.

[Malcolm Wallace]

Wed Oct 26 12:59:58 PDT 2005  tatd2
  * Fixed bugs in hat-delta and hat-detect.  Began to get cycle checking working in hat-delta.

    M ./src/hattools/EDT.hs -11 +38
    M ./src/hattools/HatDelta.hs -6 +13
    M ./src/hattools/HatDetect.hs -4 +5
    M ./src/hattools/Makefile -3 +3
    M ./src/hattools/NodeExp.hs -76 +88