Fix the dhcp clean up for Ubuntu 12.04 or newer's postinstall.sh

For more info, please see the Launchpad issue at https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/910108
adding an option to skip iso transfer
DEBIAN 6.0.5: Change the mirror server to ftp.us.debian.org

This makes the "mirror does not support this release" error go away.
DEBIAN 6.0.6: Make the VM wor better on machines without VT extensions
add SLES-11-SP2-DVD-x86_64-GM template
KVM provider: Fixed undef method
KVM provider: Fixed Windows support

* fixed adding of floppy drive to KVM machines
* support for adding virtio drivers to KVM machines
Merge branch 'master' of git://github.com/jedi4ever/veewee into kvm-windows
Fix syntax error in KVM build documentation

Minor typo in KVM documentation. Adding 'kvm' subcommand to the line `veewee build 'My Ubuntu 12.10 box'`.
Merge pull request #473 from DavidWittman/patch-1

Fix syntax error in KVM build documentation
bumped version
sleep a little longer before downloading aif.cfg

The download timed out, this gives the local webserver a little bit more time to provide aif.cfg.
Merge pull request #474 from heichblatt/master

Fixed a small bug in the definition for Arch Linux x64 netinstall
KVM Provider

- improved code structure
KVM Provider

- improved checking of network and storage pool during creation of servers
- replaced not properly implemented KVM options with one option for the network name and one for the storage pool name
- replaced all occurrences of direct libvirt usage with fog.io in create
- improved documentation to reflect the changes above
Merge branch 'master' of git://github.com/jedi4ever/veewee into kvm-windows

Conflicts:
	doc/kvm.md
Merge branch 'master' of git://github.com/jedi4ever/veewee into kvm-windows

Conflicts:
	doc/kvm.md
Merge pull request #465 from ffeldhaus/kvm-windows

KVM provider: Fixed Windows support
check for ruby-libvirtd gem
fixed kvm merge conflict