* master: (60 commits)
  fuse: increment loops WaitGroup on Server creation
  loopback: enable diagnostics logging
  fs: detect Inode.Path() hitting an orphaned inode
  tests: make RenameOpenDir more sensitive
  fs: add Options.Logger, and use throughout
  fs: fix FileAllocater type assertion
  loopback: leave file permissions on "000" files as-is
  example/loopback: make -allow-other imply default_permissions
  fuse: implement GETATTR for pollHack
  loopback: preserve owner when running as root
  tests: posixtest: add FstatDeleted
  loopback: use Lgetxattr and friends
  fs: remove typeChangeDebug code
  fs: don't log error failing MvChild
  posixtest: fix some lint errors
  fs: fix lint errors
  fs: failure to unmount on cleanup is a fatal error
  fs: plug fd leak in bridge_test.go
  fs: don't enforce dirent ordering.
  internal: skip test with other group if user is only 1 group
  ...