[cvs-nhc98] patch applied (hat): Extended/debugged new file format generation.

[Malcolm Wallace]

Thu Apr 18 07:58:05 PDT 2002  olaf
  * Extended/debugged new file format generation.
  
  Now a call of "error" aborts correctly, recording the error message and the entry point in the trace.
  
  Corrected a bug in "fun" combinators, which caused wrong parents.
  
  Handle "undefined" specially, so that it yields a non-shared ConstDef with a proper parent. Thus following backwards from "undefined" with hat-trail is possible.

    M ./src/hatlib/Hat.hs -7 +6
    M ./src/hatlib/PreludeBasic.hs -2 +2
    M ./src/hatlib/PreludeBuiltin.hs -2 +2
    M ./src/hatlib/PreludeBuiltinTypes.hx +1
    M ./src/hatlib/TPreludeBuiltinTypes.hs -3 +16
    M ./src/hatlib/hat-c.c -1 +1