- OutgoingPacket moved back to OpenMetaverse scope (separate file) from
NetworkManager, and now restores the pool- and refcount-related
functionality.
- UDPPacketBuffer BufferSize is a constant so now DEFAULT_BUFFER_SIZE.
- Added a Halcyon-compatible UDPPacketBuffer constructor that accepts a
specific buffer, etc.
- Added CopyFrom methods to assign UDPPacketBuffer Data.
