Preserve the UUIDs and the Labels in host bundling

When bundling a host, make sure that the UUIDs and the Labels of the
original file systems are preserved.
docs: Update the installation instructions

 * Add instructions for CentOS 7
 * Use curl in favor of wget on Fedora and CentOS systems.
Detect more Ubuntu variants

Detect Kubuntu, Lubuntu and Xubuntu
docs: Add a troubleshooting section

Populate this section with instructions on how to troubleshoot
libguestfs's launch failures.
windows: Remove the format=raw attribute from kvm

Do not use format=raw in the -drive option of KVM when booting the
Windows VM. The format could also be qcow2 if the original input media
is a regular file.
windows: Loosen up the 'shrink QUERYMAX' regexp

Do not search for specific words in it. The messages may be in a
language other than English. Focus on the Numbers.
Update version files and ChangeLog for 0.7.1
Merge pull request #26 from skalkoto/hotfix-0.7.1

Bug fixes and documentation updates
Merge branch 'master' into debian
Bump version to 0.7.1-1~wheezy

Signed-off-by: Nikos Skalkotos <skalkoto@grnet.gr>
Bump version to 0.7.2
Fix a TypeError triggered on Ubuntu input media
Update ChangeLog and version files for 0.7.2
Merge pull request #27 from skalkoto/hotfix-0.7.2

Hotfix 0.7.2
Merge branch 'master' into debian
Bump version to 0.7.2-1~wheezy

Signed-off-by: Nikos Skalkotos <skalkoto@grnet.gr>
Bump version to 0.7.3
kamaki: ignore ssl certificates

Support kamaki 0.13rc5. From this version on, kamaki uses ssl
certificates by default. For now, instruct kamaki to ignore the
certificates.
Update ChangeLog and version files for 0.7.3
Merge pull request #28 from skalkoto/hotfix-0.7.3

Hotfix 0.7.3