qnd: 1. Added the host name in case of error
2. flush DNS on windows machine in case of error (hack to get rid of problems with the same machine)

git-svn-id: svn+ssh://kelev.kaltura.com/usr/local/kalsource/backend/server/tags/gemini_2013_03_04@95021 6b8eccd3-e8c5-4e7d-8186-e12b5326b719
adding empty directories