[bug #13432] ownership is not preserved when copying symlinks

["Andrew V. Samoilov" <savannah-bounces gnu org>]

Follow-up Comment #2, bug #13432 (project mc):

man 2 chown
       In versions of Linux prior to 2.1.81  (and  distinct  from
       2.1.46), chown did not follow symbolic links.  Since Linux
       2.1.81, chown does follow symbolic links, and there  is  a
       new  system  call  lchown  that  does  not follow symbolic
       links.  Since Linux 2.1.86, this new call  (that  has  the
       same  semantics as the old chown) has got the same syscall
       number, and chown got the newly introduced number.

So we need to check one more function in configure and use lchown()
insteod of chown() in the vfs/local.c if HAVE_LCHONW.


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