argparse is available in python2.7 (archlinux) and on python-argparse package in debian. So
we add a dependency to this package.

new option --preserve, -p is added

info command is used to get information about an image. It will replace list command

this command is and helper to chroot inside payload mounting /{proc,sys,dev,dev/pts} fs
inside the chroot and disable daemon restart

as a corolary, invalid option are no more loaded

This allow displaying to be done without coloration

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

is new have now an force option to overwrite existing images

We need installsystems is functional on squeeze systems...

So we needs to embed:
- argparse 2.7.1 (not in python2.6)
- progressbar 2.3 (not in debian squeeze)

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

Seblu: Fix too many things...

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

best mode search best version across all repo and not the first

THis is very useful to be able to list it !