Add a routine to convert Ethernet packet types to strings.
Use that routine in "ethertype()".
Have "dissect_arp()" handle hardware addresses that aren't
6-byte Ethernet addresses and protocol addresses that aren't
4-byte IPv4 addresses - currently, it just prints the first 16
hex digits, but it could be made to handle other types specially
just as it handles 6-byte Ethernet and 4-byte IPv4 addresses.
Have it decode a more complete set of hardware address types.
git-svn-id: http://anonsvn.wireshark.org/wireshark/trunk@78
f5534014-38df-0310-8fa8-
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