[cvs-nhc98] patch applied (hat): Make a genuine SrcRef type in Haskell. Redo the lowlevel bits of

[Malcolm Wallace]

Mon Oct  4 06:28:42 PDT 2004  malcolm
  * Make a genuine SrcRef type in Haskell.  Redo the lowlevel bits of
  how SrcRefs are transferred from C to Haskell, to become (perhaps)
  more efficient, but certainly neater.

    M ./src/hattools/CommonUI.hs -3 +7
    M ./src/hattools/HatDetect.hs -16 +9
    M ./src/hattools/HatExplore.hs -15 +8
    M ./src/hattools/HatObserve.hs -18 +9
    M ./src/hattools/HatStack.hs -3 +5
    M ./src/hattools/HatTrail.hs -43 +38
    M ./src/hattools/Ident.hs -169 +1
    A ./src/hattools/Idents.hs
    M ./src/hattools/LowLevel.hs -32
    M ./src/hattools/Makefile -9 +11
    A ./src/hattools/SrcRef.hs
    M ./src/hattools/artutils.c -179 +13
    M ./src/hattools/artutils.h -14 +7