Moved Sledgehammer into its own repository, and added a README pointing to it.

While we are at it, move all of Crowbar up a directory, since we no longer
have to seperate it from Sledgehammer like that.
Pre release fixes from Dell Engineering
Add licensing information to files that were missing it.

Also copy curl over very early in the OS install process so that we can
register as installing with the admin node as early as possible.
Adding netcfg/dhcp_timeout=120 to append line, to force more than 120 seconds when installing ubuntu
Get rid of Ubuntu specific stuff in the provisioner
Get rid of more Ubuntu specific stuff in the provisioner.
Fixups to dhcp for Redhat
Update tftpd recipe to work with Redhat.
Modify nfs-server to function on redhat.
Add required parameters for dhcpd.conf
Oops, fix typo.
Merge branch 'master' into redhat-build
Merge in the Ubuntu provisioner changes from Andi.
Merge branch 'master' into redhat-build

Fix up a few merge conflicts on the way to make sure the redhat-build branch
does not load the ubuntu installer stuff or the Ganglia stuff.

Conflicts:
	change-image/dell/barclamps/crowbar/app/models/crowbar_service.rb
	change-image/dell/barclamps/crowbar/chef/data_bags/crowbar/bc-template-crowbar.json
	change-image/dell/barclamps/provisioner/chef/roles/provisioner-server.rb
Get rid of some ubuntuisms in the provisioner barclamp.
Fix up Ubuntu installer to not do anything if it is being called for a node that is not running Uubntu
Ask DHCPD to restart if any of its config files change.
Fixups to make sure dhcpd is up and running on the admin node.
Make sure xinetd gets started so that it can start tftpd.
Fix up quotation error in dhcp_update.rb.