Eucalyptus

Added WS-security for internal communication
Added URL Query Interface for interacting with Eucalyptus
Cluster Controller improvements:
- Instance caching added to improve performance under certain conditions
- Thread locks removed to improve performance
- NC resource information gathered asynchronously to improve scheduler performance
Network control improvements:
- Added ability to configure 'public' instance interface network parameters (instead of hardcoded 10. network)
- Lots of reliability changes
Cloud Controller improvements:
- Pure in-memory database
- Image registration over WS interface
- Improved build procedure
Web interface improvements:
- For all users (query interface credentials, listing of available images)
- For the administrator (addition, approval, disabling, and deletion of users; disabling of images)
Numerous bug fixes, improving stability and performance. In particular, but not limited to:
- Recovering Cloud Controller system state
- Timeout-related error reporting
- Slimmer log files, with timestamps