Move set_program_name and init_nls to host_init. On windows

fix in this fuction console and argument charset as well.

grub-core/kern/emu/main.c

@@ -180,7 +180,7 @@ main (int argc, char *argv[])
     };
   volatile int hold = 0;
 
-  set_program_name (argv[0]);
+  grub_util_host_init (&argc, &argv);
 
   dir = xstrdup (DEFAULT_DIRECTORY);