[Module-build-general] Couple of code changes

[Ken W. <ke...@ma...>]

Hey,

A couple of recent code changes I committed to CVS:

  1) Actions now run only once per dispatch() invocation.  Dave, maybe 
this means the 'distmeta' interaction with the 'distdir' stuff could be 
cleaned up some?  I suppose there's no real reason to fix things that 
aren't broken, though.

  2) I change the instance() method to current(), since it's not really 
a true Singleton pattern, and I added docs for current() and notes().

  -Ken