Cleaned up usage of Packet.get_field(). Got rid of Field.__hash__ and Field.__eq__
Cleaned up usage of Packet.get_field(). Got rid of Field.__hash__ and Field.__eq__

This meant that two fields with the same name had the same hash and leaded to the same element
in dictionnries. Now they do not anymore.

mytliulei/Scapy,mytliulei/Scapy