Adding option "-or, --ocsroot" for create-ocs-tmp-img so that it can be used for encrypted image case.
- Putting prepare_ecryptfs_mount_point_if_necessary after run again
  prompt no matter it's for saving or restoring.
- Bug fixed: create_temp_image_for_different_target_dev_name_if_necessary
failed to use the temp ocsroot for encrypted case.
- Bug fixed: when checking if LVM exists in restoring, we should only
  check that in the image dir, not in the local partitions layout.
- Package xresprobe does not exist in Debian repository, so it's removed
  from the packages list in create-drbl-live-by-pkg.
- Function name confirm_continue_or_not_default_quit in ocs-functions
  was changed to confirm_continue_or_default_quit.
- Adding encryption function for Clonezilla image. Now it's OK for Clonezilla live, not yet for Clonezilla SE.
- Set the default volume size as 4096 MB instead of 2000 MB.
Updating for new release.