#25 Fix fuser for Cygwin

[Corinna Vinschen]

Hi,

the attached patch fixes three issues of fuser on Cygwin.:

• Cygwin does not support /proc/net/unix. The call to fill_unix_cache always generates an error message that
  /proc/net/unix couldn't be found, so the patch disables the call for Cygwin. An alternative fix would be to avoid
  the error message entirely.

• `ls /dev' on Cygwin only lists manually added entries to /dev, not the default files suported by Cygwin internally.
  Also, /proc/$PID/mountinfo doesn't exist up to Cygwin 1.7.11. This breaks fuser when using the _LISTS_H
  option.

• If you don't include lists.h, the code in check_dir doesn't work well. st.st_ino is never set to 0, so the
  timeout(stat, ...) is never called. Also, thedev never gets a valid value in this case, but it's used subsequently for
  comparisons.

Hope the patch is ok for inclusion.

Thanks,
Corinna

[Corinna Vinschen]

Fix fuser for Cygwin

[Corinna Vinschen]

I forgot one: The patch also dropsscanning /proc/$PID/lib and /proc/$PID/mmap, just as on Linux.

Corinna

[Craig Small]

Hello again Corinna,
Thanks for more of the cygwin patches. They will be in psmisc 22.17