NAME
       AddTokenUpdate -- install a notification hook for command-library updates.

   SYNOPSIS
       AddTokenUpdate(functionPtr);
                      A0

   FUNCTION
       This command lets you automatically have a function called whenever the
       blitz command libraries are updated (i.e. calls to  FreeBlitzLibs(),
        LoadBlitzLibs() etc).

       Any registers may be treated as scratch registers.

   INPUTS
       functionPtr - address of routine to call

   RESULT
       NONE

   BUGS
       A maximum of 16 notification hooks can be installed. No checking is
       performed to ensure that the limit is not exceeded.

   SEE ALSO
        DelTokenUpdate()