Patches to the code for mounting extra filesystems
2 patches:
- Fixes to separate filesystem mount:
- use read -r to treat \ as normal character when reading fstab
- fix #comment detection in fstab
- decode \nnn octal sequences in fstab
- convert UUID, PARTUUID, LABEL, PARTLABEL into device path using blkid
- mount separate filesystems read-write
- fix path added to $MOUNTED
- reverse order in $MOUNTED (last mount first) for proper umount with nested mounts
- Mount separate filesystem with mount options from fstab (needed e.g. with btrfs subvolume)