Merge branch 'ef/mingw-daemon'

* ef/mingw-daemon:
  daemon: opt-out on features that require posix
  daemon: make --inetd and --detach incompatible
  daemon: use socklen_t
  mingw: use poll-emulation from gnulib
  mingw: import poll-emulation from gnulib
  daemon: get remote host address from root-process
  Improve the mingw getaddrinfo stub to handle more use cases
  daemon: use full buffered mode for stderr
  daemon: use run-command api for async serving
  mingw: add kill emulation
  mingw: support waitpid with pid > 0 and WNOHANG
  mingw: use real pid
  inet_ntop: fix a couple of old-style decls
  compat: add inet_pton and inet_ntop prototypes
  mingw: implement syslog
  mingw: add network-wrappers for daemon