Generate output with Unix line endings even from Mingw64 utils

This affects cygcheck and strace.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>

winsup/utils/cygcheck.cc

@@ -14,6 +14,7 @@
 #include <string.h>
 #include <sys/time.h>
 #include <ctype.h>
+#include <fcntl.h>
 #include <io.h>
 #include <windows.h>
 #include <wininet.h>
@@ -2251,6 +2252,9 @@ main (int argc, char **argv)
   bool ok = true;
   load_cygwin (argc, argv);
 
+  _setmode (1, _O_BINARY);
+  _setmode (2, _O_BINARY);
+
   /* Need POSIX sorting while parsing args, but don't forget the
      user's original environment.  */
   char *posixly = getenv ("POSIXLY_CORRECT");