[cvs-nhc98] patch applied (hat): Colin' s simple prototype program to mark in a Haskell source program

[Malcolm Wallace]

Wed Oct  6 06:16:36 PDT 2004  malcolm
  * Colin's simple prototype program to mark in a Haskell source program
  the application-expressions that have instances in a Hat trace.
  Output is to stdout, with terminal highlighting to indicate code that
  was exercised.

    M ./src/hattools/HatCover.hs -15 +155