TEST: do various things with hardlinks
access restrictions fix
Merge pull request #121 from reneme/test_hardlinks

TEST: Doing various nasty stuff with hardlinks
don't forget root inode (imitate what libfuse does)
Merge branch 'master' of github.com:cvmfs/cvmfs
send a reply_none for forgets on the root inode
fixed segfault when logging to closed debug file