Apply Marta's default args fix
Resolves: #1900829

Backport fedora/rhel9 initial cmdline population
Resolves: #2129740

Fix quoting of opts in grubby-bls
Resolves: #2129740

Write to /etc/kernel/cmdline on non-s390x also
Resolves: #1978226

Write to /etc/kernel/cmdline on s390x and only s390x
Resolves: #1978226

Additionally write to /etc/kernel/cmdline
Resolves: #1978226

grubby-bls: expand only the kernelopts variable

grubby-bls: only attempt to update the cmdline if was already set

Fix installed man page file mode bits

grubby-bls: strip only /boot from paths
Make grubby to also update GRUB_CMDLINE_LINUX in /etc/default/grub
grubby-bls: fix corner case when a kernel param value contains a '='
grubby-bls: update man page to match options in current wrapper script
grubby-bls: always escape the delimiter character used in sed commands
grubby-bls: add a --no-etc-grub-update option

grubby-bls: don't print rpm-sort error messages
grubby-bls: remove -o option and support -c for ppc64le grub config
grubby-bls: fix logic to check if the kernelopts var is defined in a BLS
grubby-bls: don't update grubenv when generating grub.cfg for ppc64le

grubby-bls: unset default entry if is the one being removed
grubby-bls: error if args or remove-args is used without update-kernel
grubby-bls: make --update-kernel ALL to update kernelopts var in grubenv
grubby-bls: fix --add-kernel not working when using the --args option

grubby-bls: show absolute path when printing error about incorrect param

Use mountpoint command to check whether /boot is a mount point

grubby-bls: expand all variables in options field when updating it

Correctly set LDFLAGS to include hardened flags (pjones)