Change permission and owner:group of SnfSnifferDirName only when
creating SnfSnifferDirName. Reason: SnfSnifferDirName could be
a system directory (e.g. "/usr/sbin"), and the permission and
owner:group of system directories should not be changed.
git-svn-id: https://svn.microneil.com/svn/SNFUtility/trunk@65 aa37657e-1934-4a5f-aa6d-2d8eab27ff7c