Hamachi 1.0.0.61 Beta

- Fixed a problem with peer's status indicator vanishing
from the list under certain conditions
- Fixed a problem with custom labels not being saved when
Hamachi was running in a service mode
- Added p2p key exchange caching mechanism to help Hamachi deal
with slow or very slow p2p links. Hamachi now remembers its
replies for each step of the KE and can process duplicate p2p
ke packets without recomputing RSA/DH variable from scratch.
- Reworked built-in proxy to better cope with slow links on
either side of proxied HTTP connection.