Stub for snap-and-attach function in ec2.py. Will probably end up reverting.
Started the --snapattach handling
Eliminated snap_and_attach ec2.py action and added get_block_device_mapping
Command line list of devices is now colon-delimited to show mapping from source
device to destination device. snap_and_attach now makes snapshots.
snap_and_attach grabs destination instance's availability zone. Further
progress on attaching volumes.
snap_and_attach now mounts snapshots to target
Merge pull request #2 from rowedonalde/snapshot-restore-attach

Snapshot restore attach