According to the decision of the GRNET Board of Directors,
switch license to GPLv3.

This commit will be propagated to the release
and master branches based on git flow, and the next
release will be licensed as GPLv3.

 * Prefix all private methods with _
 * Write missing docstrings
 * Move all public methods above the private ones
 * Add module docstrings where missing
 * Define source code encodings on all modules

If the process takes too long to finish after the stdout fd is
closed, kill it.

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.

The exclude patterns should contain relative to the source paths

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.

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.

Also add a basic readme file.

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

This dir will host help files used by snf-image-create-dialog

snf-image-creator-dialog is a dialog based version of snf-image-creator
Nothing works yet

The package is buggy and we can use pbs to do the same thing.