we run with -e so make sure the [] statement does not return false

new modloop (44.9M)
117.9M	4.1.10-0-grsec
39.3M	firmware
157.1M	total

old modloop (80.8M)
117.9M	4.1.10-0-grsec
112.1M	firmware
230.0M	total

when we have a device like /dev/mapper/vg0-lv_root, then will the LV
name not match with lvs' first column.

ref #4518

fix typo in btrfs-progs. add kernel module eary so /dev/btrfs-control is
created.

ref #4445

ref #4421

Some mirrors error on double / in path.

ref #4365

This is a fix of commit 3f769dc9 (setup-apkrepos: exclude faulty mirrors
from detection)

ref #4017

Non-breaking space (0xc2 0xa0) was added by mistake. Replace it with a
normal space.

Give the option so enable lvm when asking how o use selected disk

When we specify the hostname as an arg we run the tool non-interactively
and we only set it if the specified hostname is valid.

openrc will set HOSTNAME to "(none)" which makes setup-hostname script
go nuts.

ref #4017

fixes #4017

to reproduce: setup-apkcache /ponies

ref #3976

Make the progressbar show up only once instead of 4 times

Just unlinking the image prevents remounting the target file system in
read-only mode as long as the image remains mounted.