abstracted out random naming code into AWS provisioner, using in
security group stuff.
helpful task for later.
initial swing at S3 provisioner.
whoops
first S3 tests.
protocol/property tests.
fixups and our first provision test.
tests with the scheduler
test a provision with names, a little extra paranoia.
initial stab at fine-grained ACL support -- need a good way to test
this, have a think about it.
some lingering ugliness.
docs for S3 provisioner.
even more fixes for stupid things that happen with the EC2 API.