Added implementation of RakPeerInterface.Receive() and RakPeerInterface.DeallocatePacket().
Added test of one use case of RakPeerInterface.Receive() - return null if no packets are pending.
Added implementation of a couple of Send() methods.
Refactored RakNetEnums to be a package, to avoid java weirdness with subclasses ($ getting transposed to /).
Added tests for Send and SendLoopback()
Added c++ implementation of Packet.
Added DefaultMessageIDTypes enum to the Java side.
Added a finaliser on AddressOrGUID, as its usage seems inherently leaky.
Added implementation and test for RakPeerInterface::SendList().
Merge pull request #9 from hebenon/feature/rakpeerinterface-receive

Feature/rakpeerinterface receive