[cvs-nhc98] patch applied (hat): Introduce a new expression marker " DoLambda" , for the lambda exps created

[Malcolm Wallace]

Mon Sep 27 04:15:51 PDT 2004  malcolm
  * Introduce a new expression marker "DoLambda", for the lambda exps created
  by de-sugaring a do-stmt block.  In the viewers, render the application
  of a DoLambda with the sugar
      do val <- {parent of val}

    M ./include/art.h +1
    M ./src/hatlib/Hat/Hat.hs +4
    M ./src/hatlib/hat-c.c +4
    M ./src/hatlib/hat-c.h +3
    M ./src/hattools/LowLevel.hs +4
    M ./src/hattools/SExp.hs -42 +75
    M ./src/hattools/TExp.hs +1
    M ./src/hattools/artutils.c -11 +38
    M ./src/hattools/artutils.h +1
    M ./src/hattools/hat-check.c +2
    M ./src/hattools/hat-names.c -3 +3
    M ./src/hattools/list.c +1
    M ./src/hattools/observeutils.c -2 +3
    M ./src/hattrans/TraceTrans.hs -1 +12