fix for link error, issue 69
Move to external iterators for filter_map.

Also gitignored generated Makefile.
Merge pull request #74 from sfackler/master

Update to work with latest rust master
Merge pull request #70 from rossmurray/incoming

fix for link error, fixes issue #69
Update for language changes
Merge pull request #75 from pcwalton/language-changes

Update for language changes
fix c string casting