Added RHEL 6.4
Allow the user to specify disk bus and nic model

Signed-off-by: Chris Lalancette <clalancette@gmail.com>
Fix up Mandrake 8.2 breakage from last commit

Signed-off-by: Chris Lalancette <clalancette@gmail.com>
Remove unused variables and imports pointed out by pyflakes

Signed-off-by: Chris Lalancette <clalancette@gmail.com>
Update Ubuntu unittests to handle new support

Signed-off-by: Chris Lalancette <clalancette@gmail.com>
Shore up the implementation of copyfile_sparse

Signed-off-by: Chris Lalancette <clalancette@gmail.com>
Make the RPM spec file depend on libvirt-daemon-config-network

As pointed out by giulivo, current RPM distributions
will not start the default network without
libvirt-daemon-config-network installed.  While it is
possible to use Oz without this default network, I think
that most users would be happier to have it installed.
Make oz depend on libvirt-daemon-config-network.

Signed-off-by: Chris Lalancette <clalancette@gmail.com>
Add support for Ubuntu 13.04 (Stable release on 25th of April) and add in 12.04.2 (Mid Feb)
Clean up imports and various other smaller items

- Import OzException directly instead of referencing the full package name
- Import various os.path and oz.ozutil functions to more readable and shorter lines
- Replace multiple write() calls with a single multi line write() call