For this packaging, we left out our most favorite -- ogr_fdw, since ogr_fdw is now packaged as part of the PostGIS 2.2 Windows bundle. If you are not using PostGIS and would still like to use the ogr_fdw multi-purpose foreign data wrapper, you can download it as a standalone package from the PostGIS winnie experimental builds - http://winnie.postgis.net/download/windows/pg95/buildbot/extras/. Though ogr_fdw is best served with PostGIS, it has no direct dependency on PostGIS.
The curl library for www_fdw is built with SSL support and utilizes the ssleasy.dll packaged with the EDB installs. It's the same curl used by ogr_fdw.