execpt if there is build directory

- Remove custom makefile
- Remove setup.py

Allow scripts to call exit() or exit(0) to interupt their execution properly.
Can save a useless brace adn tab time.

Exiting another value cause script to fail.

Database should not be exposed to external. We should use repository most of
time.

This introduce the new image format version in X.Y by upgrade from 1 to 2.0.
Where X is an image forward compatibility breaking and Y a revision.

The new format is needed because we move versionning from number to string

Reported-by: Aurélien Dunand <aurelien.dunand@smartjog.com>

Fix complex number handling in changlog introduced by 78ddf912.
Split show function in show and show_all

Add image format display
Add new options
Fix bad handling of changelog with version which are not number.

Since we use a global variable in installsystems.printer to store the arrow
level, we have to keep this module in scripts global context.

Signed-off-by: Sébastien Luttringer <sebastien.luttringer@smartjog.com>

Since the dmod and fmod setter take a string as argument and convert them to a
base 8 integer, we don't need to check and convert in integer with the
configobj validator.

Signed-off-by: Sébastien Luttringer <sebastien.luttringer@smartjog.com>

Signed-off-by: Sébastien Luttringer <sebastien.luttringer@smartjog.com>

Signed-off-by: Sébastien Luttringer <sebastien.luttringer@smartjog.com>

Signed-off-by: Sébastien Luttringer <sebastien.luttringer@smartjog.com>

This command allow to display/edit the MOTD for a local repository

Signed-off-by: Sébastien Luttringer <sebastien.luttringer@smartjog.com>

The command 'upgrade_db' create a dummy repository (to the current version) and
add each images/payloads from the repository to upgrade. Symlinks are used to
avoid copy. Old database is still available in repository as db.bak.

Signed-off-by: Sébastien Luttringer <sebastien.luttringer@smartjog.com>

Old repository are still usable.
Database changes:
Add is_min_version and image_format in image table.
Add repository table which contain database uuid, version and motd.

Signed-off-by: Sébastien Luttringer <sebastien.luttringer@smartjog.com>

Compressors are specified in description file.
For example:

[compressor]
gzip = *
none = *.gz, *.bz2
bzip2 = rootfs*

This description file set gzip as default compressor, do not compress payload
which end with .gz and .bz2 and use bzip2 as compressor for payload matching
'rootfs*'

Signed-off-by: Sébastien Luttringer <sebastien.luttringer@smartjog.com>

configobj keeps the order of options in config file, we don't need to use
OrderedDict.

Seblu: Sad :'(

Signed-off-by: Sébastien Luttringer <sebastien.luttringer@smartjog.com>

Image version now accept a string of digit separated by dots and extra char as
a qualifier (~ or +).

Example:
1.2.3.4~dev < 1.2.3.4 < 1.2.3.4+dev

Old repositories are still compatible thanks to sqlite type affinity
(https://www.sqlite.org/faq.html#q3

).

We use a package version comparison algorithm for image version comparison
inspired by Debian.

Seblu: Fix typos

Signed-off-by: Sébastien Luttringer <sebastien.luttringer@smartjog.com>

Signed-off-by: Sébastien Luttringer <sebastien.luttringer@smartjog.com>

Signed-off-by: Sébastien Luttringer <sebastien.luttringer@smartjog.com>

Rewrap this exception to ISError to avoid threat them as unexpected error.

Signed-off-by: Sébastien Luttringer <sebastien.luttringer@smartjog.com>