add sqlite3 to gemspec
initial stab at database support -- ip database converted
several changes to eliminate needless circular requires
some fixups, first stab at group database and provisioner DB support
well, it's working with vagrant at least now
fix some things that I broke
remove the at_exit flag from scheduler
Merge branch 'refactors' into new_features

Conflicts:
	lib/chef-workflow/support/ip.rb