Include delay-load imports in the module import iterators

_From [rnk@google.com](https://code.google.com/u/rnk@google.com/) on October 04, 2012 16:52:26_

The initial implementation of the module import iterator ( issue #877 ) is skipping delay-load imports, since those are a separate data structure that needs to be walked.

This issue covers including them. At a cursory glance, the struct layouts are different so I avoided implementing it for now.

_Original issue: http://code.google.com/p/dynamorio/issues/detail?id=931_