* util/biosdisk.c: [__CYGWIN__] Add includes.
(grub_util_biosdisk_open): Use Linux code also for Cygwin.
(get_os_disk): Move variable declarations to OS specific
parts to avoid warning.
[__GNU__] (get_os_disk): Fix /dev/sdXsN case.
[__CYGWIN__] (get_os_disk): Add Cygwin /dev/sdXN device names.
(grub_util_biosdisk_get_grub_dev): Use Linux code also for
Cygwin.
* util/getroot.c: [__CYGWIN__] Add includes.
(strip_extra_slashes): Fix "/" case.
[__CYGWIN__] (get_win32_path): New function.
[__CYGWIN__] (grub_get_prefix): Add conversion to win32 path.
[__CYGWIN__] (find_root_device): Disable.
[__CYGWIN__] (get_bootsec_serial): New function.
[__CYGWIN__] (find_cygwin_root_device): Likewise.
[__linux__] (grub_guess_root_device): Add early returns to simplify
structure.
[__CYGWIN__] (grub_guess_root_device): Call find_cygwin_root_device.
[__linux__] (grub_util_get_dev_abstraction): Enable LVM and RAID
check for Linux only.
eedf167fef