Bug#865386: Overly tight permissions on the root of images made with live-wrapper

[Steve McIntyre <steve@einval.com>]

Source: live-wrapper
Version: 0.6+nmu1
Severity: minor

The root directory of the ISO image is mode 0700
(i.e. drwx------). This is clearly coming through from the temporary
directory it's derived from, created using tempnam. This is rather
silly and pointless, but hardly critical. Patch coming soon.

-- System Information:
Debian Release: 9.0
  APT prefers testing
  APT policy: (500, 'testing'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.9.0-3-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)