Save and restore default mount options with tune2fs for ext4
Fix a regression introduced by 2d5445466d389b331c9ad1a984c66354415f21ea
A comma as IFS is irrelevant because we need options separated by comma
in one block. (eg : default_mount_options)
Also, it breaks the loop because spaces are used as separator in
disklayout.conf.
Add an option to copy all users and group.
It's usefull in the case we want to restore ACL of all users.
Automatic Recover feature
Handle the return code of ReaR
Automatic recover support on USB devices
Provide a menu after the recovery
Small improvement to logic to find syslinux version
Merge pull request #259 from dagwieers/syslinux-version

Small improvement to logic to find syslinux version
Implement get_partition_number() to allow for easy testing and trap problems

This function now traps when the partition number is not a number or spans more than two characters. Since Relax-and-Recover does not support more than 9 partitions we are not creating another artificial limit. However if we find a better way to get the partition number from inconsistent devices (those that add a partition number directly to a trailing number), I am all for that.

This pull-request relates to #183
Merge pull request #265 from dagwieers/get_partition_number

Implement get_partition_number() to allow for easy testing and trap problems
Make use of the new get_partition_number function
Merge pull request #266 from dagwieers/get_partition_number

Make use of the new get_partition_number function
Merge pull request #260 from Arakmar/aclFixes

Better ACLs handling
Merge pull request #256 from Arakmar/Auto_Recover

Automatic Recover feature