canonicalize_file_name clashed with gnulib function. Additionally
it was declared in 2 places: emu/misc.h and util/misc.h. Added
grub_ prefix and removed second declaration.

In file included from util/misc.c:36:0:
./include/grub/emu/misc.h:56:1: error: 'libintl_printf' is an unrecognized format function type [-Werror=format=]
 char * EXPORT_FUNC(xasprintf) (const char *fmt, ...) __attribute__ ((format (printf, 1, 2))) WARN_UNUSED_RESULT;
 ^
./include/grub/emu/misc.h:58:1: error: 'libintl_printf' is an unrecognized format function type [-Werror=format=]

The reason is libintl.h which redefines printf as libintl_printf. The problem
is not present in native MinGW build which avoids redefinition.  Use
(format (__printf__) instead which is valid replacement in GCC.

v2: add grub-core/lib/libgcrypt/src/g10lib.h
v3: modify g10lib.h during import

	follow the same algorithm to avoid method mismatch. Don't assume
	DMRAID- UUID to mean full disk but instead check that mapping is linear.

* grub-core/osdep/unix/getroot.c (strip_extra_slashes): Move inside
!defined (__GNU__).
(xgetcwd): Likewise.
* include/grub/emu/hostdisk.h (grub_util_hurd_get_disk_info)
[__GNU__]: Add prototype.
* util/getroot.c (grub_util_biosdisk_get_grub_dev) [__GNU__]: Format
long int using %ld rather than %d.

We need to hide "modprobe efivars" error output to avoid confusion. So
consolidate grub_util_exec_* into single function that can optionally redirect
all three standard descriptors and make all other functions compatibility
wrappers.

Also remove include/grub/osdep/exec_unix.h which does not appear to be used
anywhere.

	Fixes build for windows.

Add grub_util_disable_fd_syncs call to turn grub_util_fd_sync calls into
no-ops, and use it in programs that copy files but do not need to take
special care to sync writes (grub-mknetdir, grub-rescue,
grub-mkstandalone).

On my laptop, this reduces partmap_test's runtime from 1236 seconds to
204 seconds.

	the function of these files exceeds what can be sanely handled in shell
	in posix-comaptible way. Also writing it in C extends the functionality
	to non-UNIX-like OS and minimal environments.

	and grub_hostfs_init.

	Modify mkrelpath to work even if device is mounted with subvolid option.

	* osdep/unix/exec.c: ... here. Add few additional exec_* variants.

	(grub_util_check_char_device): Likewise.
	* include/grub/emu/getroot.h: Likewise.

	* include/grub/emu/misc.h: Likewise.

	use OS-dependent versions rather than to rely on stat().

	* include/grub/emu/hostfile.h: ... here.

	and remove export.h.

	platform-dependent part in kernel for easy access to OS functions.

	open/read/write.

	fseeko.

	windows use unicode version.

	in OS-specific headers which may redefine generic names
	like "far".

	Removed.
	* grub-core/osdep/linux/hostdisk.c (grub_hostdisk_linux_find_partition):
	Made static.

	leftover.

	moves OS-dependent parts from kern/emu/hostdisk.c to
	grub-core/osdep/*/hostdisk.c.

	* util/getroot_linux.c: ... here. Make all functions static.

	and not just printable.

	Migrate all explicit defines to this new one.

	grub_util_fd_strerror when using grub_util_fd_*.
	(grub_util_fd_open_device): Likewise.
	(grub_util_biosdisk_read): Likewise.
	(grub_util_biosdisk_write): Likewise.
	* grub-core/kern/emu/hostdisk_unix.c (grub_util_fd_open): New function.
	(grub_util_fd_strerror): Likewise.
	(grub_util_fd_sync): Likewise.
	(grub_util_fd_close): Likewise.
	* grub-core/kern/emu/hostdisk_windows.c (grub_util_fd_sync): Likewise.
	(grub_util_fd_close): Likewise.
	(grub_util_fd_strerror): Likewise.
	* include/grub/emu/hostdisk.h (grub_util_fd_close): Make into real
	function proto rather than macro.
	(grub_util_fd_sync): Likewise.
	(grub_util_fd_open): Likewise.
	(grub_util_fd_strerror): New proto.

	Define dummy grub_util_pull_lvm_by_command to decrease number of #if's.

	Use windows path for DEFAULT_DIRECTORY.

	files rather than one file with loads of #if's.
	* util/getroot.c: Likewise.

	mingw32 as well based on grub_util_get_disk_size.
	* util/misc.c (grub_util_get_disk_size): Removed. all users switched to
	grub_util_get_fd_size.
	(sync): Removed.
	(fsync): Moved to ...
	* grub-core/kern/emu/misc.c (fsync): ... here.

	for vasprintf presence.