coreutils: update to 9.4

patches were copied from CygWin.

coreutils/coreutils-8.32-src-dd.c.patch

@@ -0,0 +1,45 @@
+--- origsrc/src/dd.c	2016-11-09 15:11:35.000000000 -0600
++++ src/src/dd.c	2017-02-03 13:32:48.741217700 -0600
+@@ -37,6 +37,10 @@
+ #include "xstrtol.h"
+ #include "xtime.h"
+ 
++#ifdef __CYGWIN__
++# include <io.h>
++#endif
++
+ /* The official name of this program (e.g., no 'g' prefix).  */
+ #define PROGRAM_NAME "dd"
+ 
+@@ -1989,6 +1993,13 @@ copy_with_unblock (char const *buf, size
+ static void
+ set_fd_flags (int fd, int add_flags, char const *name)
+ {
++#if __CYGWIN__
++  /* Cygwin does not allow fcntl to set the mode.  */
++  int mode_flags = add_flags & (O_BINARY | O_TEXT);
++  add_flags &= ~(O_BINARY | O_TEXT);
++  if (mode_flags && setmode (fd, mode_flags) == -1)
++    error (EXIT_FAILURE, errno, _("setting flags for %s"), quote (name));
++#endif /* __CYGWIN__ */
+   /* Ignore file creation flags that are no-ops on file descriptors.  */
+   add_flags &= ~ (O_NOCTTY | O_NOFOLLOW);
+ 
+@@ -2379,6 +2390,8 @@ main (int argc, char **argv)
+     }
+   else
+     {
++      if ((input_flags & (O_BINARY | O_TEXT)) == 0)
++	input_flags |= O_BINARY;
+       if (ifd_reopen (STDIN_FILENO, input_file, O_RDONLY | input_flags, 0) < 0)
+         die (EXIT_FAILURE, errno, _("failed to open %s"),
+              quoteaf (input_file));
+@@ -2402,6 +2415,8 @@ main (int argc, char **argv)
+            | (conversions_mask & C_NOCREAT ? 0 : O_CREAT)
+            | (conversions_mask & C_EXCL ? O_EXCL : 0)
+            | (seek_records || (conversions_mask & C_NOTRUNC) ? 0 : O_TRUNC));
++      if ((opts & (O_BINARY | O_TEXT)) == 0)
++	opts |= O_BINARY;
+ 
+       /* Open the output file with *read* access only if we might
+          need to read to satisfy a 'seek=' request.  If we can't read