rutil: FileSystem: fix typo, log directory traversal

git-svn-id: https://svn.resiprocate.org/rep/resiprocate/main@10403 ddefafc4-47db-0310-ae44-fa13212b10f2
Merge from main

git-svn-id: https://svn.resiprocate.org/rep/resiprocate/branches/b-gsoc-2013@10404 ddefafc4-47db-0310-ae44-fa13212b10f2