1.0 to 1.1
----------
1, Parallel::Pvm::spawn now accepts argv argument

2, Parallel::Pvm::notify accepts "cnt" argument 
   for PvmHostAdd

3, Parallel::Pvm::recv_notify correctly receives
   list of host tids for PvmHostAdd notification

4, Some internal buffering optimization.

(1--3 was contributed by Rob Torop)

