Add options for preserving extended atrributes, hard links, ACLs.

 * Fix a bug where the parent process did not wait on the child
   processes.
 * Make sure that when updating the copy progress bar, at least
   0.1 seconds have passed. This guarantees that we do not experience
   any flickering in the progress bar.

Add a new try_fail_repeat function that wraps cleanup system commands
and retries them if they fail. There are cases where commands like
dmsetup, umount and losetup -d may fail with device is busy. In most
of the cases, sleeping for halve a second and retrying does the job.

In Guestfs you get notifications about progress on some functions like
launch() by registring callback functions. When using guestfs from python,
this is fragile. If the callback functions raises an exception, you end up
with segmentation fault. It is better to completely remove the progress
monitoring from launch().

Replace the UUID entries in fstab and grub files for filesystems that
have beeen recreated.

The exclude patterns should contain relative to the source paths

Also do a code cleanup

The partition table of the image is created correct. The partitions
are not yet filled.

Nothing is working yet

Check the file system usage and accordingly reduce the size of the
last partition in the image.

Create a sparse file under /mnt in the size of the root hard disk
and copy the mbr into this file. Not yet workable.

This is not yet workable but it will host the code for creating
images out of a running system.

This can be used to create an image out of a live system. This
functionality is not yet implemented.

The program would crash when running in wizard mode if the account
or token where missing from the .kamakirc file.

This reverts commit 883e57b0.
Drop the greenlet support.

Needed by new kamaki, otherwise it throughs an exception at the end.

The former is older but there are packages for it in distros like
Ubuntu.

It has changed after the last major revision and was not updated.

This is a workaround for a progress bar bug, where the system may
stay with the cursor hidden if finish() is not called.

PBS has now bocome sh.

Add progress >= 1.0.2 as install_dependency, since this is the version
that fixed the empty progress bar problem.

Add SORTORDER image property

Create a new dialog_menu module to host all the "expert mode" code.
Check the code with a new version of pep8

Fix various typos in messages, add .gitignore file for
automatically produced intermediate files.

Every time you tried to reupload an image, the dialog displayed the
pithos url instead of the image filename as initial value.

Extend the mechanism to recognise events with value "button/power.*"
as power button events. It used to only check for events with value
"button[ /]power".

The function used to ignore directories when cleaning sensitive data