Migrated to Nunit (not really tested)

git-svn-id: https://etee.svn.codeplex.com/svn@27504 555e8bc2-ad3d-4a22-a156-a42dcab9bd6f
Migrated to .net 4

git-svn-id: https://etee.svn.codeplex.com/svn@27505 555e8bc2-ad3d-4a22-a156-a42dcab9bd6f