In util/getroot and efidisk slightly modify exitsing comment to mostly
retain it but still make GCC7 compliant with respect to fall through
annotation.
In grub-core/lib/xzembed/xz_dec_lzma2.c it adds same comments as
upstream.
In grub-core/tests/setjmp_tets.c declare functions as "noreturn" to
suppress GCC7 warning.
In grub-core/gnulib/regexec.c use new __attribute__, because existing
annotation is not recognized by GCC7 parser (which requires that comment
immediately precedes case statement).
Otherwise add FALLTHROUGH comment.
Closes: 50598
"Command for ...".
* grub-core/commands/hdparm.c (options): Use "Display" rather than
"Check" since we don't check anything.
* grub-core/commands/i386/cpuid.c (options): Clarify that long mode
is 64-bit one.
* grub-core/commands/search_wrap.c (options): Clarify the conditions.
* grub-core/disk/geli.c (grub_md_sha256_real): Fix typo.
(grub_md_sha512_real): Likewise.
to ensure alignment.
(grub_hdparm_print_identify): Make argument uint16 * to ensure
alignment. Ensure tmp alignment.
(grub_cmd_hdparm): Ensure buf alignment.
* grub-core/disk/ata.c (grub_ata_strncpy): Make src and dest uint16 *
to ensure alignment.
(grub_ata_dumpinfo): Ensure text alignment.
(grub_atapi_identify): Preserve alignment invariant.
(grub_ata_identify): Likewise. Use grub_get_unaligned32 when necessary.
