[cvs-nhc98] patch applied (hat): Permit hat-trail to display parent-colouring correctly.

[Malcolm Wallace]

Fri May 18 04:02:40 PDT 2001  malcolm
  * Permit hat-trail to display parent-colouring correctly.
  
  To achieve this, we add an extra field to most of the messages sent
  from hat-connect to hat-trail.  This field contains a prediction
  (obtained via the new routine peekTrace()) of the node number that
  will eventually be the /displayed/ parent for a particular node,
  i.e. by skipping over Hiddens and Sats and following the left pointer
  of Indirections.

    M ./src/hattools/browsercomms.c -7 +66
    M ./src/hattools/browsercomms.h +1
    M ./src/hattools/nodecache.c -1 +2