upd v4_7 has two major changes:

* fixes dependant product ordering -- the old algorithm of simply 
  reversing the ups depend output for products doesn't work
  for products where the full dependency graph is:
    foo
    |__bar
    |  |__bleem
    |__baz
       |__bleem
  Because ups trims this graph to read
    foo
    |__bar
    |  |__bleem
    |__baz
  to optimize out the duplicate setup.  The new algorithm includes
  the depth of the dependency, so for the above graph it installs
  bleem first, then baz, then bar, then foo.
* qualifier changes to go with ups v4_7 extended qualifier matching