Implement grub_file tool and use it to implement generating of config

in separate root.

include/grub/elf.h

@@ -2467,7 +2467,7 @@ typedef Elf32_Addr Elf32_Conflict;
 
 #define R_X86_64_NUM		24
 
-#ifndef GRUB_UTIL
+#ifdef GRUB_TARGET_WORDSIZE
 #if GRUB_TARGET_WORDSIZE == 32
 
 typedef Elf32_Addr Elf_Addr;

include/grub/fileid.h

@@ -0,0 +1,29 @@
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2013  Free Software Foundation, Inc.
+ *
+ *  GRUB is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  GRUB is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef GRUB_FILEID_HEADER
+#define GRUB_FILEID_HEADER	1
+
+#include <grub/elfload.h>
+
+int
+grub_file_check_netbsd32 (grub_elf_t elf);
+int
+grub_file_check_netbsd64 (grub_elf_t elf);
+
+#endif