MP2-440: Added extension method for IPHostEntry that returns a UNC-path for a given IPHostEntry
MP2-440: Made the NetworkNeighborhoodResourceAccessor use the BrowserService instead of the NetworkResourcesEnumerator
MP2-440: Introduced IsRootPath method to NetworkNeighborhoodResourceAccessor to be consistent with IsServerPath and IsSharePath
MP2-440: NetworkNeighborhoodResourceAccessor.GetChildDirectories doesn't need impersonation anymore to enumerate the computers in the NetworkNeighborhood (i.e. in case of the root path). NetbiosNameServiceNighborhoodBrowser and DirectoryEntryNeighborhoodBrowser don't need impersonation at all, WNetEnumNeighborhoodBrowser impersonates itself.
MP2-440: Made the NeighborhoodBrowsers to be used configurable