For windows images check the appropriate registry keys to find out
the system users

If the image gets registered as public allow anyone to read the
metadata and the md5sum file.

Before uploading to pithos, check if any remote file gets
overwritten.

Check if /var/spool/mail exists before trying to remove the content
of the directory.

Syspreps that have already been executed shouldn't get returned by
list_syspreps

If libguestfs's inspect_get_distro returns "unknown", then use the
OSFAMILY image property value as OS value.

Check if the filesystem is mounted read-write before you execute
the do_sysprep function

UFS2 filesystems don't get automatically detected by the linux
kernel. We need to explicitly state the correct filesystem type
and options

In bundling host make sure that the default mount options are enabled
in the newly created file system.

In kamaki 0.8 `store' command is replaced with `file' and `astakos' is
replaced with `user'.

If the ostype returned by libguestfs is valid and distro in unknown,
don't print the distro at all.

Rename DiskDevice class to Image and move it to a seperate module.
Also, don't let the user access the os_type/* modules directly. In
Image class create the `os' member variable that will host an
appropriate instance of one of the OSBase classes.

Make the docs html theme comply with the of the synnefo projects

Variable d in function valideate_account was undefined

The exclude patterns were wrong and they excluded more files than
they should.