Merge branch 'PR/libmount-fanotify' of https://github.com/karelzak/util-linux-work

* 'PR/libmount-fanotify' of https://github.com/karelzak/util-linux-work:
  libmount: ifdef for fanotify support on older systems
  libmount: (monitor) add fanotify_next_fs()
  libmount: (monitor) add basic fanotify support
  libmount: (monitor) rename public API to "mountinfo"
  libmount: (monitor) clean up mountinfo function names
  libmount: add mnt_fs_is_{moved,attached,detached} functions
  libmount: (monitor)  cleanup userspace_add_watch() exiting
  libmount: (monitor) check for utab delete
  libmount: (monitor) optimize inotify utab watch
  libmount: (monitor) cleanup op_process_event() return codes
  libmount: (monitor) add next-fs API
  libmount: (monitor) epoll_wait code consolidation
  libmount: (monitor) require entry-specific functions
  libmount: (monitor) clean up internal names
  libmount: (monitor) support type-specific data
  libmount: (monitor) support additional monitor identifiers
  libmount: split monitor code to more files